Question

write the modes by which insects affect the crop yield

Answer 1

They are as followes :-
1) They cut the stem, roots and leaves.
2)They bore into fruits and vegetables.
3) They suck the cell sap from various parts of the plants.

hoped helped u :))

Answer 2

The insects affect the plant yield only through their mode of nutrition, they either cut or nibble the parts of the plant especially the leaves that help in photosynthesis, whereas other insects suck the entire plant sap and therefore prevent the bees from getting attracted to the plants.

This in turn blocks the pollination of plants and stops their spreading or reproduction. The destruction of leaves and flowers therefore limits the survival abilities of the plant.