Question

(b) Why do some plants trap insects?​

Answer 1

Explanation:

when a soil is poor in nitrogen.plants try to obtain nitrogen by other means.here is a group of photosynthetic plants which obtain nitrogen by trapping and digesting insects.such plants are called insectivorous plants. example- drosera,nepenthes.

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Answer 2

Why do some plants trap insects?​

Answer:

The soil in some areas are deficient in nitrates. So the plants are not able to get necessary nitrates from the soil. Some plants develop their leaves to trap insects to meet their nitrogen demand. These plants utilizes the insect's protein by converting it into nitrate. Some examples of such type of plants are pitcher plant, Venus flytrap and Bladder wort.