(a) Draw a well labelled diagram of the water cycle (b) Mention two deficiency symptoms of phosphorus in crops (c) Using the table below, classify the follo...
Question 1 Report
(a) Draw a well labelled diagram of the water cycle
(b) Mention two deficiency symptoms of phosphorus in crops
(c) Using the table below, classify the follow-ing 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
Answer Details
(a) Water cycle
(b) Deficiency symptoms of phosphorus in crops
- Stunted growth and poorly developed roots.
- Leaves, especially older leaves, develop a purplish or reddish coloration, usually beginning from the tips.
- Flowering, seed formation and maturity may be delayed or reduced.
(c) Classification of insect pests according to mode of feeding
| Biting and chewing pests | Piercing and sucking pests | Boring pests |
|---|---|---|
| Locust Armyworm | Scale insect Cotton stainer Green spider mites Thrips Capsids | Weevil Earworm Yam beetle |
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