FISHERY PRACTICAL ANSWERS

(1a)
– It’s used for packaging fish products

(1b)
(i) Basket
(ii) Leaves
(iii) Foil
(iv) Sack
(v) Carton

(1ci)
(i) It is light/portable
(ii) It is biodegradable
(iii) It can be branded
(iv) It is inexpensive
(v) It is presentable
(vi) Not likely to cause injury

(1cii)
(i) Not reusable
(ii) Easily damaged
(iii) Not readily available

(1d)
It is mostly grounded to make meal or pellets.

(4a)
Loading

(4b)
– Temperature
– Dissolved oxygen
– PH
– Conductivity
– ORP, and Turbidity

(4c)
To obtain a measurement, the disk is lowered into the water while observing the depth at which it disappears. It is lowered some more and then raised while observing the depth at which it reappears. The Secchi disk measurement is the average of the two observations. Secchi disks can also be used to monitor the degree of suspended clay particles in your pond.