WAEC Biology Syllabus 2027/2028 Questions PDF Download

Download the WAEC Biology Syllabus 2027/2028 PDF and see the complete topics, examination structure, practical requirements, ecology, genetics and physiology.

The WAEC Biology Syllabus 2027/2028 contains the topics and practical skills you need to study while preparing for Biology in the West African Senior School Certificate Examination.

The syllabus covers the concept of living things, cells, nutrition, transport, respiration, excretion, reproduction, ecology, microorganisms, conservation, variation, genetics, evolution, human physiology, plant physiology and practical Biology.

READ: Access 2027 WAEC Questions and Answers in all Subjects – Free Study Guide

ALSO READ: WAEC Specimens 2027

If Biology is one of your registered WAEC subjects, you should use the syllabus as your main study checklist. It helps you know what to cover in theory and the laboratory or field activities you should understand before the examination.

The downloadable Biology syllabus on this page contains the sections applicable to Nigerian candidates: Section A, which is common to all candidates, and Section C, which contains the additional Biology material for candidates in Nigeria, Sierra Leone, The Gambia and Liberia.

Use the syllabus together with your Biology textbook, class notes, practical lessons and WAEC past questions.

READ ALSO: WAEC Syllabus 2027/2028 PDF Download for All Subjects

Download WAEC Biology Syllabus 2027/2028 PDF

You can download the complete WAEC Biology Syllabus 2027/2028 PDF and keep it on your phone, tablet or computer.

The PDF contains:

• Biology aims and objectives
• WAEC Biology examination scheme
• Paper 1 requirements
• Paper 2 requirements
• Paper 3 Practical Biology
• Concept of Living
• Plant and Animal Nutrition
• Basic Ecological Concepts
• Conservation of Natural Resources
• Variation in Population
• Genetics
• Adaptation and Evolution
• Cell Theory
• Human Anatomy and Physiology
• Plant Structure and Physiology
• Human Health and Environment
• Microorganisms
• Biology and Industry
• Practical experiments and observations

After downloading it, go through the topics one after another and mark the areas you have completed.

What You Will Study in WAEC Biology

The Biology syllabus covers a broad range of biological concepts and practical activities.

For Nigerian candidates, your preparation should cover both the common Section A and the Nigeria-applicable Section C.

The major areas include:

1. Concept of Living
2. Plant and Animal Nutrition
3. Basic Ecological Concepts
4. Conservation of Natural Resources
5. Variation in Population
6. Biology of Heredity
7. Adaptation and Evolution
8. Cell Theory
9. Irritability
10. Human Excretory Systems
11. Sense Organs
12. Reproduction
13. Nitrogen Cycle
14. Feeding Habits
15. Population Studies
16. Nutrient Cycling
17. Habitats
18. Microorganisms and Health
19. Mammalian Anatomy and Physiology
20. Plant Structure and Physiology
21. Human Health and Environment
22. Biotechnology and Biology in Industry

Biology requires both understanding and observation, so do not prepare by memorising definitions alone.

WAEC Biology Examination Structure

There are three papers in WAEC Biology:

• Paper 1
• Paper 2
• Paper 3

Papers 1 and 2 are taken as a composite paper at one sitting.

WAEC Biology Paper 1

Paper 1 consists of 50 multiple-choice objective questions.

The questions are drawn from Section A of the syllabus.

The paper:

• Carries 50 marks
• Lasts 50 minutes

Because questions can come from different parts of the common Biology syllabus, you should cover all the major Section A topics.

WAEC Biology Paper 2

Paper 2 consists of six essay questions drawn from the syllabus.

The paper is divided into Sections A, B and C.

For Nigerian candidates, you answer:

• Two questions from Section A
• All the short-structured questions from Section C

Each Section A question carries 20 marks, while the compulsory short-structured questions in Section C carry 30 marks.

The total is 70 marks, and the paper lasts 1 hour 40 minutes.

When preparing for Paper 2, practise how to:

• Define biological terms
• Explain biological processes
• Compare structures and functions
• Draw and label diagrams
• Interpret biological information
• State differences and similarities
• Apply biological concepts
• Organise essay answers clearly

WAEC Biology Paper 3

Paper 3 is the practical component for school candidates.

It lasts 2 hours.

For Nigerian candidates, the paper involves Section A and Section C.

Section A contains two compulsory questions, while Section C contains the country-specific practical question applicable to Nigeria and the other listed countries.

The total score is 80 marks.

Your practical preparation should include observation, identification, drawing, measurement, classification, experimentation and interpretation of biological specimens and data.

Complete WAEC Biology Syllabus 2027/2028

The following are the major Biology topics you should study.

Concept of Living

This section introduces the characteristics, organisation and classification of living organisms.

Living and Non-Living Things

You should understand the differences between living and non-living things.

Be able to identify the characteristics that distinguish living organisms from non-living objects.

You should also understand why viruses may be considered a link between living and non-living things.

Classification of Living Things

Study the classification of organisms into major kingdoms such as:

• Monera
• Protoctista or Protista
• Fungi
• Plantae
• Animalia

You should know the major characteristics of these groups and important examples.

Examples include:

• Bacteria
• Blue-green algae
• Amoeba
• Chlamydomonas
• Rhizopus
• Mushrooms
• Mosses
• Ferns
• Flowering plants
• Insects
• Fishes
• Amphibians
• Reptiles
• Birds
• Mammals

You should also understand the major characteristics used in classifying organisms.

Differences Between Plants and Animals

Study the major differences between plants and animals.

Pay attention to differences in:

• Nutrition
• Movement
• Cell structure
• Growth
• Response
• Storage products

Do not memorise a table without understanding why the differences exist.

Organisation of Life

Living organisms show different levels of organisation.

Study:

• Cell
• Tissue
• Organ
• Organ system

You should understand how increasing levels of organisation lead to greater specialization.

Examples include:

• Amoeba as a single-celled organism
• Hydra in relation to tissue organisation
• Heart as an organ
• Reproductive and excretory systems as organ systems

You should also understand the advantages and disadvantages of complexity in higher organisms.

Forms in Which Living Cells Exist

Study the different ways living cells may exist.

Examples include:

• Single and free-living organisms
• Colonies
• Filaments
• Cells forming part of a multicellular organism

Examples you should recognise include:

• Amoeba
• Paramecium
• Euglena
• Chlamydomonas
• Volvox
• Spirogyra
• Cheek cells
• Onion cells

Cell Structure and Function

The cell is one of the most important Biology topics.

You should understand the structure and functions of major cell components.

Cell Organelles

Study:

• Cell wall
• Cell membrane
• Nucleus
• Cytoplasm
• Mitochondria
• Lysosomes
• Chloroplasts
• Endoplasmic reticulum
• Ribosomes
• Centrosomes
• Golgi bodies
• Chromosomes

Know the function of each structure.

Plant and Animal Cells

You should be able to:

• Draw a plant cell
• Draw an animal cell
• Label important parts
• State similarities
• State differences

Biological diagrams should be neat and clearly labelled.

The Cell and Its Environment

Study the physical and biophysical processes that control the movement of materials.

Diffusion

Understand:

• Meaning of diffusion
• Importance
• Examples in living organisms
• Factors that affect diffusion

Osmosis

Study:

• Meaning of osmosis
• Movement of water across membranes
• Importance in plants and animals

You should understand terms and processes associated with osmosis such as:

• Turgidity
• Plasmolysis
• Haemolysis
• Crenation

Active Transport

Understand how active transport differs from diffusion and osmosis.

You should know why living cells may need energy to move certain substances across membranes.

Properties and Functions of Living Cells

Living cells carry out important life processes.

These include nutrition, respiration, excretion, growth, development, movement and reproduction.

Nutrition in Living Organisms

Study the different modes of nutrition.

Autotrophic Nutrition

Photosynthesis is the major example.

You should understand how green plants manufacture food.

Heterotrophic Nutrition

Study forms such as:

• Holozoic
• Parasitic
• Saprophytic
• Symbiotic

Understand examples of organisms using the different modes.

Cellular Respiration

Study:

• Meaning of respiration
• Aerobic respiration
• Anaerobic respiration
• Energy release

You should understand the importance of ATP.

The syllabus also expects a simplified understanding of glycolysis and the Krebs cycle without unnecessary biochemical detail.

You should know the importance of anaerobic respiration in areas such as food processing.

Excretion

Understand excretion as the removal of metabolic waste products.

Study waste products such as:

• Carbon dioxide
• Water
• Ammonia
• Urea
• Salts
• Uric acid

You should understand excretion in single-celled organisms and more complex organisms.

Growth and Development

Study growth in living organisms.

Important areas include:

• Cell division
• Mitosis
• Enlargement
• Differentiation
• Increase in dry weight
• Increase in size
• Increase in number of cells

Growth in Plants

Study regions of active growth such as:

• Root tips
• Shoot tips

Also prepare:

• Growth hormones
• Auxins
• Tropisms
• Primary growth
• Secondary growth

You should understand how environmental stimuli influence plant growth.

Movement

Study structures involved in movement.

These include:

• Cilia
• Flagella

You should also understand cyclosis or cytoplasmic streaming.

Reproduction

Study both asexual and sexual reproduction.

Asexual Reproduction

Examples include:

• Fission
• Budding
• Vegetative propagation

You should understand examples involving organisms such as Paramecium and yeast.

Sexual Reproduction

Study:

• Formation of gametes
• Gametogenesis
• Fusion of gametes
• Fertilization
• Meiosis

You should understand the importance of sexual reproduction in producing variation.

Tissues and Supporting Systems

Study support in both animals and plants.

Skeleton and Support in Animals

Understand:

• Biological importance of support
• Bone
• Cartilage
• Chitin
• Exoskeleton
• Endoskeleton
• Hydrostatic skeleton

You should also study:

• Vertebral column
• Girdles
• Long bones
• Joints
• Relationship between muscles and skeleton

Know the functions of the skeleton in:

• Support
• Protection
• Locomotion
• Respiratory movement

Supporting Tissues in Plants

Study:

• Turgid parenchyma
• Collenchyma
• Xylem
• Sclerenchyma

Understand their roles in providing:

• Strength
• Rigidity
• Flexibility
• Resistance

Transport Systems

Transport is another major Biology topic.

Transport in Animals

Study the mammalian circulatory system.

The Heart

Know the structure and function of the heart.

You should be able to draw and label the heart correctly.

Blood Vessels

Study:

• Arteries
• Veins
• Capillaries

Understand how their structures relate to their functions.

Blood and Lymph

Study:

• Components of blood
• Functions of blood
• Lymph

You should understand how the circulatory system transports:

• Respiratory gases
• Digested food
• Nutrients
• Waste products

Transport in Plants

Study the uptake and movement of:

• Water
• Mineral salts
• Manufactured food

Water and Mineral Salt Uptake

Understand how water and minerals move from the soil into roots and through the plant.

Translocation

Study the movement of organic materials from leaves to other parts of the plant.

You should understand the role of phloem.

Transpiration

Study:

• Meaning
• Types
• Advantages
• Disadvantages
• Factors affecting transpiration
• Measurement of transpiration rate

You should also understand mechanisms involved in the movement of water through plants, including:

• Root pressure
• Cohesion-tension
• Adhesion
• Water-potential gradient

Respiratory Systems

Study gaseous exchange in:

• Fish
• Toad
• Mammals
• Plants

You should understand respiratory surfaces such as:

• Body surface
• Gills
• Lungs

You should also know the characteristics that make a respiratory surface efficient.

For practical preparation, become familiar with the respiratory organs of organisms such as Tilapia and small mammals.

Excretory Systems

Study the structures and mechanisms involved in excretion.

Important structures include:

• Kidneys
• Stomata
• Lenticels

Excretion in Plants

Know important plant waste products such as:

• Water
• Carbon dioxide
• Oxygen
• Alkaloids
• Tannins
• Gums
• Resins
• Acids

Regulation of the Internal Environment

Homeostasis helps organisms maintain a relatively stable internal environment.

Kidney

Study:

• Structure
• Functions
• Osmoregulation
• Excretion
• Acid-base balance

Understand how water and salt concentration in the blood can affect kidney function.

Liver

Study the major functions of the liver.

You should also recognise its position in relation to structures such as:

• Gall bladder
• Bile duct
• Pancreas
• Duodenum
• Stomach

Skin

Study the structure and functions of mammalian skin.

Understand the role of the skin in maintaining the internal environment.

Hormonal Coordination

Study hormones in animals and plants.

Animal Hormones

Study important endocrine glands such as:

• Pituitary
• Thyroid
• Adrenal
• Pancreas
• Gonads

Know:

• Hormones secreted
• Sites of secretion
• Functions
• Effects of over-secretion
• Effects of under-secretion

Plant Hormones

Study the effects of plant hormones, particularly auxins.

Understand their roles in:

• Lateral bud development
• Leaf fall
• Root initiation
• Plant growth

Nervous Coordination

Study the nervous system and how it coordinates activities in animals.

Central Nervous System

Study:

• Brain
• Spinal cord

Know the functions of major brain regions such as:

• Cerebrum
• Cerebellum
• Medulla oblongata
• Hypothalamus

Peripheral Nervous System

Study:

• Somatic nervous system
• Autonomic nervous system
• Sympathetic system
• Parasympathetic system

Neurones

Know the structure and functions of:

• Sensory neurones
• Motor neurones
• Intermediate neurones

You should be able to draw and label a neurone.

Reflex and Voluntary Actions

Study:

• Reflex arc
• Reflex actions
• Voluntary actions
• Differences between reflex and voluntary actions
• Conditioned reflexes

Examples of reflex actions include:

• Blinking
• Knee jerk
• Withdrawal of the hand from a hot object

Sense Organs

Study the structure and functions of major sense organs.

The Eye

Know:

• Structure
• Functions of important parts
• Eye defects
• Correction of eye defects

The Ear

Study the structure and functions of the ear.

You should understand its role in hearing and balance.

Reproduction in Mammals

Study the male and female reproductive systems.

You should understand:

• Structure
• Functions
• Differences between male and female reproductive organs
• Sperm
• Ovum
• Fertilization
• Embryonic development
• Birth
• Birth control

You should be able to draw and label important reproductive structures.

Metamorphosis

Study the life histories of:

• Butterfly
• Cockroach

Understand the difference between:

• Complete metamorphosis
• Incomplete metamorphosis

You should be able to draw and label the important stages.

For the Nigeria-specific section, also study the life history and metamorphosis of the housefly.

Reproduction in Flowering Plants

Study:

• Floral parts
• Male reproductive structures
• Female reproductive structures
• Pollination
• Fertilization
• Fruit formation
• Seed formation

Pollination

Study:

• Self-pollination
• Cross-pollination
• Agents of pollination
• Features of insect-pollinated flowers
• Features of wind-pollinated flowers

Placentation

Prepare:

• Axile placentation
• Marginal placentation
• Parietal placentation

Fruits and Seeds

Study:

• Types of fruits
• Fruit structure
• Differences between fruits and seeds
• Methods of fruit and seed dispersal
• Adaptive features for dispersal

Plant Nutrition

Plant Nutrition focuses mainly on photosynthesis and mineral requirements.

Photosynthesis

Study:

• Process of photosynthesis
• Chemical equation
• Light reactions
• Dark reactions
• Materials required
• Conditions required
• Evidence of photosynthesis
• Fate of products

You should understand experiments such as testing a green leaf for starch.

Mineral Nutrition

Study macro- and micronutrients required by plants.

Important macronutrients include:

• Carbon
• Hydrogen
• Oxygen
• Nitrogen
• Potassium
• Phosphorus
• Magnesium
• Sulphur
• Calcium
• Iron

Important micronutrients include:

• Copper
• Manganese
• Zinc
• Boron

Understand the difference between food manufactured by plants and mineral elements absorbed from the environment.

Animal Nutrition

Study:

• Classes of food
• Sources
• Functions
• Balanced diet
• Malnutrition
• Food tests
• Digestive enzymes
• Alimentary canal
• Dental formula
• Feeding habits

Food Tests

You should understand practical tests for:

• Starch
• Reducing sugar
• Protein
• Fats and oils

Know:

• Reagent used
• Procedure
• Observation
• Conclusion

Digestive Enzymes

For each important enzyme, know:

• Source
• Site of action
• Substrate
• Product or effect

Also understand the effects of:

• Temperature
• pH
• Concentration

on enzyme activity.

Alimentary Canal

Study the structures and functions of the alimentary canal.

You should understand how different parts are adapted to their digestive functions.

Dental Formula

Understand:

• Meaning of dental formula
• Types of mammalian teeth
• Functions
• Arrangement

Dental care in humans is also important.

Basic Ecological Concepts

Ecology is a large part of the Biology syllabus.

Ecosystem

Understand terms such as:

• Environment
• Biosphere
• Habitat
• Population
• Community
• Ecosystem
• Niche

You should also understand the difference between biotic and abiotic components.

Ecological Factors

Study ecological factors in aquatic and terrestrial environments.

These include:

• Temperature
• Humidity
• Rainfall
• Wind
• Light intensity
• Soil factors
• Water conditions

Practical Biology may require you to measure or interpret ecological factors.

Food Chains Food Webs and Trophic Levels

Study:

• Producers
• Consumers
• Decomposers
• Food chains
• Food webs
• Trophic levels

You should be able to construct food chains and food webs using named organisms.

Energy Flow

Understand:

• Movement of energy through ecosystems
• Energy loss
• Pyramid of numbers
• Pyramid of energy

Energy flow is non-cyclic.

Decomposition

Study:

• Micro-decomposers
• Macro-decomposers
• Products of decomposition
• Importance of decomposers

You should understand the role of decomposition in nutrient cycling.

Biological Associations

Study relationships among organisms.

Important associations include:

• Parasitism
• Symbiosis
• Commensalism
• Saprophytism

Be able to give suitable examples and explain the biological significance of each association.

Adaptation to Habitats

Understand how organisms are adapted to their environments.

Study adaptations for:

• Obtaining food
• Protection
• Reproduction
• Temperature regulation
• Water conservation

You should relate structural and behavioural features to the habitat of the organism.

Pollution

Study:

• Air pollution
• Water pollution
• Soil pollution
• Noise pollution

Air Pollution

Know common pollutants such as:

• Carbon monoxide
• Sulphur dioxide
• Oxides of nitrogen
• Smoke
• Smog
• Dust

Understand their sources and harmful effects.

Water and Soil Pollution

Study pollutants such as:

• Detergents
• Insecticides
• Fertilizers
• Herbicides
• Sewage
• Domestic wastes
• Industrial wastes
• Crude oil

You should understand the effects of oil spillage and other pollutants on organisms and ecosystems.

Population Ecology

Study:

• Population size
• Population density
• Natality
• Mortality
• Immigration
• Emigration
• Competition
• Predation
• Disease
• Food availability

You should understand how these factors affect population size.

Ecological Succession

Study:

• Primary succession
• Secondary succession
• Climax community

Understand changes that occur in species composition and population during succession.

Food Preservation and Storage

Study biological methods and principles involved in preserving food.

Methods include:

• Drying
• Salting
• Smoking

Understand how preservation limits the activities of microorganisms.

Microorganisms and Health

Microorganisms can be beneficial or harmful.

Study important groups such as:

• Bacteria
• Viruses
• Protozoa
• Some fungi
• Some algae

Beneficial Effects of Microorganisms

Understand their importance in:

• Nature
• Food production
• Medicine
• Industry
• Fermentation

Harmful Effects

Study diseases associated with microorganisms.

Examples in the syllabus include:

• Cholera
• Measles
• Malaria
• Ringworm

For diseases studied, know:

• Causative organism
• Mode of transmission
• Symptoms
• Prevention
• Control

Control of Harmful Microorganisms

Study control methods such as:

• High temperature
• Antibiotics
• Antiseptics
• High salinity
• Dehydration

You should also study methods of controlling disease vectors.

Important vectors include:

• Houseflies
• Mosquitoes
• Tsetse flies

Public Health

Study practices important for community health.

These include:

• Refuse disposal
• Sewage disposal
• Immunization
• Vaccination
• Inoculation

Understand the relationship and differences among immunization, vaccination and inoculation.

Conservation of Natural Resources

Study the meaning and importance of conservation.

Resources that should be conserved include:

• Soil
• Water
• Wildlife
• Forests
• Minerals

You should understand:

• Conservation methods
• Conservation laws
• Conservation education
• Benefits of conservation
• Problems affecting conservation

Issues such as overgrazing and poaching should also be understood.

Variation in Population

Variation is important in genetics and evolution.

Morphological Variation

Examples include differences in:

• Height
• Weight
• Skin colour
• Eye colour
• Hair colour
• Fingerprints

Physiological Variation

Examples include:

• Ability to roll the tongue
• Ability to taste PTC
• ABO blood groups

Understand the difference between:

• Continuous variation
• Discontinuous variation
• Morphological variation
• Physiological variation

Genetics and Heredity

Genetics is one of the major areas of WAEC Biology.

Genetic Terms

Understand terms such as:

• Gene
• Genotype
• Phenotype
• Dominant
• Recessive
• Allele
• Locus
• Test cross
• Back cross

You should be able to use these terms correctly in genetic questions.

Mendelian Genetics

Study:

• Mendel’s experiments
• Mendelian traits
• Monohybrid inheritance
• Dihybrid inheritance
• Mendelian laws

Understand the transmission of hereditary characteristics from parents to offspring.

Chromosomes and DNA

Study:

• Chromosome structure
• Role of chromosomes in heredity
• DNA
• Gene replication

Understand how meiosis and fertilization contribute to the transmission and recombination of genetic information.

Sex Determination and Sex-Linked Characters

Study:

• Sex determination
• Linkage
• Sex-linked inheritance

Examples include:

• Haemophilia
• Colour blindness
• Baldness
• Hairy ear lobes

Applications of Genetics

Understand applications in:

• Agriculture
• Medicine

You should also understand the relevance of heredity to matters such as sickle-cell anaemia and rhesus factor.

Adaptation and Evolution

Study the ways organisms adapt for survival and how biological evolution occurs.

Behavioural Adaptations

Study social animals such as:

• Termites
• Bees

Understand:

• Castes
• Division of labour
• Communication
• Group behaviour

Other behavioural adaptations include:

• Basking
• Territorial behaviour
• Hibernation
• Aestivation

Evidence of Evolution

Study evidence such as:

• Fossil records
• Comparative anatomy
• Comparative physiology
• Comparative embryology
• Geographical distribution
• Comparative biochemistry
• Systematics
• Adaptive radiation

Theories of Evolution

Understand the contributions of:

• Lamarck
• Darwin

You should also understand the role of mutation in evolution.

Nigeria-Specific Biology Topics

In addition to Section A, Nigerian candidates should prepare the Section C topics contained in the syllabus.

Cell Theory

Study the development of cell theory.

Understand the contributions of scientists such as:

• Hooke
• Dujardin
• Schleiden
• Schwann

You should understand the major principles of the cell theory.

Irritability

Irritability is the ability of living organisms to respond to stimuli.

Study:

• Taxis
• Nastism
• Environmental stimuli

Examples of factors that can cause responses include:

• Temperature
• pH
• Light
• Other environmental changes

Diseases of the Kidney and Liver

Kidney Diseases

Study:

• Nephritis
• Kidney stones
• Diuresis

Understand their effects and relevant remedies or management principles covered in the syllabus.

Liver Diseases

Study:

• Infective hepatitis
• Liver cancer
• Gallstones

Understand their effects.

Additional Sense Organs

The Nigeria-specific section includes further study of:

• Nose
• Tongue
• Skin

Nose

Understand the process of smell and the role of sensory cells and the olfactory region.

Tongue

Study:

• Taste buds
• Taste
• Relationship between taste and smell

Skin

Understand the role of the skin as a sensory organ.

Courtship Behaviour in Animals

Study courtship activities such as:

• Pairing
• Display
• Territoriality
• Seasonal migration associated with breeding

Understand why these behaviours improve reproductive success.

Germination of Seeds

Study:

• Conditions necessary for germination
• Oxygen
• Moisture
• Suitable temperature
• Epigeal germination
• Hypogeal germination

You should be able to observe, distinguish and draw the different forms of germination.

Nitrogen Cycle

Study:

• Nitrogen fixation
• Nitrification
• Ammonification
• Denitrification

You should know the roles of important bacteria involved in the cycle.

Understand the importance of root nodules in leguminous plants.

Additional Modes of Nutrition

Study:

• Autotrophic nutrition
• Chemosynthetic nutrition
• Carnivorous plants

Know suitable examples.

Feeding Habits and Adaptations

Study feeding categories such as:

• Carnivorous
• Herbivorous
• Omnivorous

You should also understand adaptations involved in:

• Filter feeding
• Fluid feeding
• Insect feeding
• Saprophytic feeding
• Parasitic feeding

Examples of organisms used to illustrate feeding mechanisms include insects, protozoans and parasites.

Population Studies by Sampling

You should understand ecological sampling.

Study:

• Population size
• Population density
• Dominance

You may need to count organisms in a defined area and use the information to estimate population characteristics.

Nutrient Cycling in Nature

Study:

• Carbon cycle
• Water cycle

Carbon Cycle

You should be able to:

• Draw the carbon cycle
• Identify sources of carbon dioxide
• Explain the importance of the cycle
• Relate photosynthesis, respiration, combustion and decomposition

Water Cycle

Understand the movement of water through nature and the importance of water to living organisms.

Ecological Tolerance

Study:

• Tolerance
• Minimum range
• Maximum range

Understand that organisms survive only within suitable ranges of environmental conditions.

Habitats

Study aquatic and terrestrial habitats.

Aquatic Habitats

Prepare:

• Marine habitat
• Estuarine habitat
• Freshwater habitat

For each habitat, understand:

• Characteristics
• Distribution of organisms
• Adaptive features

Terrestrial Habitats

Study:

• Marsh
• Forest
• Grassland
• Arid land

Again, understand environmental characteristics and adaptations of plants and animals.

Balance in Nature

Understand:

• Dynamic equilibrium
• Population
• Population density
• Role of predators
• Effects of environmental factors

You should understand how biological interactions help maintain ecological balance.

Relevance of Biology to Agriculture

Study how agricultural practices affect ecology.

Important practices include:

• Bush burning
• Tillage
• Fertilizer use
• Herbicide and pesticide use
• Different farming systems

Understand both beneficial and harmful environmental effects.

Microorganisms Around Us

You should understand microorganisms found in:

• Air
• Water
• The human body
• Food

Practical work may involve observing microbial colonies and identifying them from characteristics such as growth pattern and appearance.

Applications of Variation

Variation has practical applications.

Study its relevance to:

• Crime detection
• Blood transfusion
• Determination of paternity

Fingerprints and blood groups are particularly important examples.

Competition and Adaptation

Study:

• Intraspecific competition
• Interspecific competition
• Factors causing competition
• Relationship between competition and succession

Important resources organisms compete for include:

• Food
• Space
• Water
• Light
• Mates

Structural Adaptations for Survival

Study adaptations that help organisms:

• Obtain food
• Escape predators
• Defend themselves
• Secure mates
• Regulate body temperature
• Conserve water

Relate each adaptation to the environment of the organism.

Adaptive Colouration

Study colouration in plants and animals and understand its biological functions.

Adaptive colouration can contribute to:

• Protection
• Camouflage
• Warning
• Reproduction

Mammalian Anatomy and Physiology

The Nigeria-specific section also requires practical knowledge of mammalian internal anatomy.

Dissection of a Small Mammal

You should understand the arrangement and functions of internal organs.

Practical Biology may involve observing mammals such as:

• Rat
• Mouse
• Guinea pig
• Rabbit

You should be able to identify and draw important internal organs.

Mammalian Heart

Study the heart in greater detail.

Understand the mechanism of heartbeat and structures involved in excitation and contraction.

Respiratory Quotient

Study the meaning and significance of respiratory quotient.

Understand how RQ can differ according to the respiratory substrate.

Muscles

Study:

• Smooth muscle
• Striated muscle
• Cardiac muscle

Understand how muscles bring about movement.

The sliding-filament model of muscle contraction should also be understood.

Skeletal Tissues

Study the structures of:

• Bone
• Cartilage

Understand their roles in support and movement.

Human Reproduction and Antenatal Care

Study physical changes occurring during puberty.

Understand the role of hormones in the development of secondary sexual characteristics.

Also prepare:

• Meaning of antenatal care
• Importance of antenatal visits
• Nutrition during pregnancy
• Exercise during pregnancy

Plant Structure and Physiology

Study the morphology of:

• Monocotyledonous plants
• Dicotyledonous plants

Understand:

• Roots
• Stems
• Leaves
• Their functions
• Modifications

You should be able to distinguish monocotyledonous plants from dicotyledonous plants.

Guttation

Understand:

• Meaning of guttation
• Biological principles involved
• Difference from transpiration

Floral Formula

You should understand how to determine and write floral formulae for the flowers specified in the syllabus.

Examples include:

• Flamboyant
• Pride of Barbados
• Rattle box

Humans and Their Environment

This section connects Biology with everyday health and environmental management.

Integrated Water Resources Management

Understand:

• Meaning
• Importance
• Environmental benefits

You should know how proper water-resource management can reduce undesirable environmental changes.

Health Hygiene and Sanitation

Study:

• Health
• Hygiene
• Sanitation
• Personal cleanliness

Understand how good hygiene helps prevent disease.

Drug Abuse

Study:

• Meaning
• Consequences
• Effects on individuals and society

Community Health

Understand the importance of community planning and environmental conditions to health.

First Aid

Study:

• Meaning of first aid
• Methods of administering first aid
• Importance

Biology and Industry

Biology has important industrial applications.

Biology and Water Industry

Study:

• Water contamination
• Identification of polluted water
• Wastewater treatment
• Biological Oxygen Demand

Understand biological processes involved in sewage treatment.

Biology and Fishing Industry

Study:

• Fish-stock management
• Fish farming
• Importance of fish farming
• Advantages
• Disadvantages

Biology and Food Industry

Study food additives.

Understand:

• Meaning
• Natural food additives
• Artificial food additives
• Possible health implications

Biology and Agriculture

Understand how biological principles contribute to successful Agriculture through:

• Fertilizers
• Pesticides
• Selective breeding
• Disease resistance
• Irrigation

Biotechnology

Study:

• Meaning of biotechnology
• Recombinant DNA technology
• Applications

You should understand how biological knowledge is used in modern industry and Agriculture.

Biological Fuel Generation

Study biological energy sources such as:

• Biogas
• Ethanol from plant materials
• Other biological methods mentioned in the syllabus

Understand why alternative energy sources are important.

WAEC Biology Practical Syllabus 2027/2028

Practical Biology should form part of your preparation from the beginning.

The syllabus repeatedly requires candidates to observe, identify, draw, measure, compare and carry out biological experiments.

Biological Drawings

You should know how to make good biological drawings.

A good biological drawing should:

• Be large
• Be neat
• Use clear single lines
• Have correct proportions
• Have straight label lines
• Contain accurate labels
• Avoid unnecessary shading

Use a sharp pencil.

Microscope and Prepared Slides

Become familiar with:

• Prepared slides
• Cells
• Tissues
• Organisms
• Mitosis
• Meiosis
• Neurones

You should understand how microscopic observations relate to the theory topics you study.

Food Tests

Practise food tests for:

• Starch
• Reducing sugar
• Protein
• Fats and oils

Know the reagent, procedure, observation and conclusion for each.

Photosynthesis Experiments

Understand experiments used to demonstrate:

• Need for light
• Need for chlorophyll
• Production of starch
• Gas exchange

Osmosis and Diffusion Experiments

Understand experiments demonstrating movement of substances across membranes.

Be able to explain observations using the correct biological terms.

Transpiration Experiments

Study methods used to determine or compare transpiration rates.

Understand environmental factors that affect transpiration.

Ecological Measurements

Become familiar with measurements of environmental factors such as:

• Temperature
• Humidity
• Rainfall
• Wind speed
• Light intensity
• Salinity
• Turbidity
• pH
• Water current

Know the appropriate instruments where required.

Population Sampling

Understand practical methods for estimating:

• Population size
• Population density
• Distribution

You should know how observations can be recorded and interpreted.

Biological Specimens

When studying a specimen, use a consistent approach.

Learn:

• Name
• Observable features
• Classification
• Habitat
• Functions
• Adaptations
• Similarities
• Differences
• Biological importance

This method is useful for plants, animals and other biological materials.

Important Biology Diagrams to Practise

Biology contains many diagram-based questions.

You should practise diagrams related to topics such as:

• Plant cell
• Animal cell
• Soil-independent biological specimens where applicable
• Mammalian heart
• Kidney
• Skin
• Neurone
• Male reproductive system
• Female reproductive system
• Sperm
• Ovum
• Flower
• Fruits
• Skeleton
• Long bones
• Respiratory organs
• Alimentary canal
• Root and stem sections
• Carbon cycle
• Germination
• Metamorphosis

Do not simply copy diagrams repeatedly.

Know the function of every part you label.

How to Use the WAEC Biology Syllabus to Prepare

Download the Complete PDF

Save the syllabus somewhere you can access easily.

Use it throughout your preparation instead of looking at it only once.

Divide the Syllabus Into Major Sections

A good study order is:

1. Cells and Living Things
2. Nutrition
3. Transport
4. Respiration and Excretion
5. Coordination
6. Reproduction
7. Ecology
8. Microorganisms and Health
9. Conservation
10. Variation and Genetics
11. Evolution
12. Nigeria-Specific Topics
13. Practical Biology

This makes the syllabus easier to manage.

Create a Topic Checklist

Mark each topic as:

• Not started
• Studying
• Completed
• Needs revision

Your goal should be to move every topic into the completed category before the examination.

Draw Biology Diagrams Regularly

Do not wait until the examination is close.

Practise diagrams after studying the relevant topic.

For example, after studying the heart, draw and label it.

After studying reproduction, practise the reproductive systems.

After studying cells, draw plant and animal cells.

Connect Structure With Function

Many Biology questions test the relationship between structure and function.

Whenever you study an organ or organism, ask:

• What does it look like?
• What are its parts?
• What does each part do?
• How is its structure suited to its function?

This method is particularly useful for:

• Cells
• Hearts
• Blood vessels
• Roots
• Leaves
• Respiratory organs
• Reproductive organs
• Sense organs

Practise Biological Experiments

For every important experiment, understand:

• Aim
• Materials
• Procedure
• Observation
• Result
• Conclusion
• Precautions where necessary

Do not memorise the conclusion without understanding the experiment.

Use WAEC Past Questions

After completing a topic, answer past questions from that area.

For example:

After studying Genetics, answer Genetics questions.

After studying Ecology, answer Ecology questions.

After studying Nutrition, practise food-test and digestion questions.

This helps you identify weak areas.

What Should You Focus on Most for WAEC Biology

You should cover the complete syllabus, but make sure you understand broad areas such as:

• Cell structure
• Diffusion and osmosis
• Nutrition
• Photosynthesis
• Food tests
• Respiration
• Transport
• Excretion
• Homeostasis
• Hormonal coordination
• Nervous coordination
• Reproduction
• Ecology
• Food chains and food webs
• Pollution
• Microorganisms
• Conservation
• Variation
• Genetics
• Evolution
• Practical Biology
• Biological drawings
• Specimen identification

For a more focused revision guide, see the WAEC Biology Areas of Concentration 2027/2028.

You can also see the WAEC Areas of Concentration 2027/2028 for All Subjects.

Is Biology Compulsory in WAEC

Biology is not compulsory for every WAEC candidate.

You will take Biology if it is among the subjects selected during your registration.

If Biology is one of your registered subjects, prepare for both the theory and practical requirements.

For registration information, see WAEC Registration 2027 Form Fee Deadline and Guidelines.

Frequently Asked Questions

What Is the WAEC Biology Syllabus 2027/2028?

The WAEC Biology syllabus contains the topics, practical activities and examination requirements you need to prepare for Biology in WASSCE.

Where Can I Download the WAEC Biology Syllabus PDF?

Use the download button near the beginning of this article to save the complete Biology syllabus PDF to your device.

How Many Papers Are in WAEC Biology?

There are three papers:

• Paper 1
• Paper 2
• Paper 3

How Many Questions Are in WAEC Biology Paper 1?

Paper 1 contains 50 multiple-choice questions.

How Long Is WAEC Biology Paper 1?

Paper 1 lasts 50 minutes.

How Long Is WAEC Biology Paper 2?

Paper 2 lasts 1 hour 40 minutes.

How Many Marks Is WAEC Biology Paper 2?

Paper 2 carries a total of 70 marks.

Is There Practical Biology in WAEC?

Yes.

Paper 3 is the practical component for school candidates.

How Long Is WAEC Biology Practical?

Paper 3 lasts 2 hours.

What Topics Should I Read for WAEC Biology?

You should prepare Cells, Nutrition, Transport, Respiration, Excretion, Coordination, Reproduction, Ecology, Microorganisms, Conservation, Variation, Genetics, Evolution, Human Physiology, Plant Physiology and Practical Biology.

Is Genetics Important in WAEC Biology?

Yes.

The syllabus covers genetic terms, Mendelian inheritance, chromosomes, DNA, sex determination, sex-linked characteristics and applications of heredity.

Is Ecology Important in WAEC Biology?

Yes.

Ecology covers ecosystems, ecological factors, food chains, food webs, energy flow, population, pollution, habitats, succession and conservation.

Does WAEC Biology Include Experiments?

Yes.

The syllabus contains several experiments and observations involving photosynthesis, food tests, enzymes, transpiration, ecological factors, microorganisms and other biological processes.

Should I Practise Biology Diagrams?

Yes.

Drawing and labelling biological structures is an important part of Biology preparation.

Can I Prepare for Biology With Past Questions Only?

Past questions are useful, but they should be used together with the complete syllabus, textbooks, class notes and practical lessons.

A good preparation sequence is:

Syllabus → Learn the topic → Practical understanding → Past questions → Revision

Where Can I Find WAEC Areas of Concentration for All Subjects?

Use the WAEC Areas of Concentration 2027/2028 for All Subjects page to access the main revision guides.

Conclusion

The WAEC Biology Syllabus 2027/2028 gives you a complete guide to the theory and practical knowledge you need for the examination.

Your preparation should cover the concept of living things, cells, nutrition, transport, respiration, excretion, coordination, reproduction, ecology, microorganisms, conservation, genetics, evolution, human physiology, plant physiology and Practical Biology.

Do not study Biology by memorising definitions alone.

Understand biological processes, connect structures with their functions, practise diagrams, carry out or study the required experiments and become familiar with practical specimens.

Use the syllabus as your master checklist and mark each topic as you complete it.

After studying each section, answer related WAEC past questions to test whether you can apply what you have learned.

READ ALSO: WAEC Syllabus 2027/2028 PDF Download for All Subjects

READ ALSO: WAEC Areas of Concentration 2027/2028 for All Subjects

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