Question

(2) Insects are very important for (3) The leaves of onion plants have venation.

Answer 1

Answer:

2.Insects create the biological foundation for all terrestrial ecosystems. They cycle nutrients, pollinate plants, disperse seeds, maintain soil structure and fertility, control populations of other organisms, and provide a major food source for other taxa.

3.Radical concentrically arranged, exstipulate, sessile, cylindrical, fistular, leaf bases fleshy, parallel venation. Leaves are arranged on the disc-like stem in concentric circles.