TEST OF PRACTICAL KNOWLEDGE QUESTION (a)(i) Name the toxic substance found in specimen G (FRESH CASSAVA TUBER). (ii) Suggest four ways of removing the toxic...

TEST OF PRACTICAL KNOWLEDGE QUESTION

(a)(i) Name the toxic substance found in specimen G (FRESH CASSAVA TUBER).
(ii) Suggest four ways of removing the toxic substance named in (a)(i).

(b) State two uses each of specimens I (ONION BULBS) and J (PEPPER FRUITS).

(c) List four pests of specimen I.

(d) Name two groups of crops to which specimens I and J belong based on their uses.

Answer Details

(a)

1. The toxic substance found in specimen G (fresh cassava tuber) is called cyanide.
2. Four ways of removing the toxic substance from cassava tubers are peeling, soaking, boiling, and fermenting.

(b)

1. Two uses of specimens I (onion bulbs) are as a spice and for medicinal purposes, while two uses of specimens J (pepper fruits) are as a spice and for culinary purposes.

(c)

1. Four pests of specimen I (onion bulbs) are onion thrips, onion maggots, cutworms, and nematodes.

(d)

Specimens I (onion bulbs) and J (pepper fruits) belong to the group of vegetable crops, which are grown for human consumption. Within the vegetable group, onions are a bulb vegetable, while peppers are a fruit vegetable.