What is the type of embryo sac development in Polygonamy?

List the types of embryo sac.

Explain the types of embryosac developments.

What is the other name of embryo sac?

What is the function of yolk sac?

In angiosperms, female gametophte is called as embryo sac. Given figures represent different stages of embryo sac development in angiosperms. Arrange them in correct order and select the correct option.

Polygonum type of embryo sac is

Find the parts of the embryo sac.

Assertion : The method of development of embryo sac from a single functional megaspore is termed as monosporic development. Reason : In monosporic (Polygonum) type of embryo sac development, usually the megaspore which is situated towards micropylar end remains functional.

(a) Draw a shematic labelled diagram of a fertilised embryo sac of an angiosperm. (b) Describe the stages in embryo development in a dicot plant .