Which cells supply nourishment to developing sperms ?

Correct the statements: The outer sterile tissue that provides nourishment to the developing microspores in microsporangia is called endothecium.

In these animals, the female retain the eggs inside its body after fertillisation and allows the development of embryo inside the body without providing extra nourishment ot the developing embryo as the placenta is absent. Such animlas are called as

Which of the following do Ova supply more than sperm?

Which of the following stores and nourishes the sperms ?

A somatic plant cell has potential to develop into a full plant. This is called:

Which artery supply blood to kidney in vertebrates?

Which cell organelle produces acrosome in sperm?

Name the cells that nourish the germ cells in the testes. Where are these cells located in the testes?