Question

Name the tissue present in the hard covering of seeds? what king of a chemical material it is made of to make it so hard and protective ?????

Answer 1

Sclerenchyma tissue present in the covering of seeds makes it hard.The chemical called lignin is responsible for this hardness.This chemical is present on the the cell walls of sclerenchyma.

Answer 2

The seed coat develops from the material tissue, the integuments, originally surrounding the ovule. The seed coat in the mature seedcan be a paper-thin layer (e.g. peanut) or something more substantial (e.g. thick and hard in honey locust and coconut), or fleshy as in the sarcotesta of pomegranate.