Question 3
- Draw a well labelled diagram of the water cycle. [8 marks]
- (b) Mention two deficiency symptoms of phosphorus in crops. [2 marks]
- c) Using the table below, classify the following insect-pests according to their modes of
feeding:
i. weevil;
ii. locust;
iii. scale insect;
iv. armyworm
v. earworm;
vi. cotton stainer;
vii. green spidermites
viii. thrips;
ix. capsids;
x. yam beetle.
Observation
Most candidates correctly drew and labelled the water cycle Many of the candidates correctly stated the deficiency symptoms of phosphorus in crops.This question was difficult for many candidates in that they forgot insects’ mode of feeding while others could not correctly place even one insect in its correct mode of feeding.
The expected answers include:
(c)
Classification of insect-pests according to their modes of feeding
