Why weeds and wild plants are not affected by insects and pests?

Why are weeds and wild plants not affected by insects and pests?

Why actinides are not affected by nitric acid ?

Why does a plant need water?

Ravi went to his cotton field. There he observed some of the cotton leaves were affected by Insects. He also observed that weeds in between are not affected. Give reasons.

Why do plants like Nepenthes trap Insects?

When few plants are infected ______ is an excellent method of controlling pests.

What type of defect can arise when a solid is heated ? Physical property is affected by it and in what why ?

Why do we feel sticky of stem and leaves of a plant effected with aphids?

MULTIPLE CHOICE QUESTION Read the following para and answer the question. A few plants manufacture their own food but also obtain a part of their nutrition from insects. Leaves of these plants are specially modified to trap insects. What plant species are explained through above passage ?

Discuss with your teacher about (i) haploid insects and lower plants where cell-division occurs, and (ii) some haploid cells in higher plants where cell-division does not occur.