Question

What is heterospory? Briefly comment on its significance. Give two examples.
Ncert solutions for Class 11th Biology Chapter 3 Exercise 7

Answer 1

Certain pteridophytes with two spores are called Heterospory.
The larger one is called megaspore and the smaller one is called microspore.The megaspore produces female gematophytes and the microspores produces male gematophytes. Therefore, they play a crucial role in evolution.
Examples:- angiosperms and gymnoesperms.

Answer 2

Answer:

The phenomenon of producing two different kinds of spores in the same plant is known as heterospory.

Significance of heterospory:

• Heterospory leads to the development of seeds in gymnosperms and angiosperms.

• It is required in the differentiation of male and female gametophytes.

Examples: Salvinia, Selaginella