| (i) Cochineal insect is used to eliminate Opuntia. |
| (ii) Water logging decreases the amount of salts in the soil that increases soil fertility. |
| (iii) Fertilisers are not readily soluble in water, so they are absorbed by the plants slowly. |
| (iv) Rust of wheat is a fungal disease. |
| (v) The practice of growing two or more dissimilar crops in the same field one after the other is called mixed cropping. |
A) (i), (ii), (iii) and (v) only
B) (i) and (iv) only
C) (ii) and (iv) only
D) (iii), (iv) and (v) only
Correct Answer: B
Solution :
Water logging decreases the amount of salts in the soil that reduces soil fertility. Fertilisers are soluble in water, they are directly absorbed by plants and greatly increase crop yield. The practice of growing two or more dissimilar crops in the same field simultaneously is called mixed cropping.
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