" (b) What is sporopollenin? "

With a labelled diagram, describe in brief the origin and development of male gametophyte of Angiosperm. What is sporopollenin?

[" Which of the following is correctly matched "],[" pair? "],[" (1) Exine - pectocellulosic "],[" (2) Intine - sporopollenin "],[" (3) Generative cell - has large and irregularly "],[" shaped nucleus "],[" (4) Vegetative cell - has abundant food "],[" reserve "]

Draw a diagram of a male gametophyte of an angiosperm. Label any four parts. Why is sporopollenin considered the most resistant organic material ?

Sporopollenin occurs in

Sporopollenin occurs in

Sporopollenin occurs in

Pollen tube is composed of (A) pectin (B) cutin (C) sporopollenin (D) pecto-cellulose

Where is sporopollenin present in plants? State its significance with reference to its chemical nature.

Where is sporopollenin present in plants? State its significance with reference to its chemical nature.