Question

Name two examples of heterosporous pteridophytes.

Answer 1

Heterosporous pteridophytes:

1. The majority of pteridophytes are homosporous (containing identical cells), such as Equisetum, while just a small number, like Selaginella and Salvinia, are heterosporous (having megaspores and microspores).
2. Large spores that germinate to generate female gametophytes and tiny spores that germinate to produce male gametes make up these pteridophytes.
3. Certain traits of heterosporous pteridophytes are precursors to the seed habit in gymnosperms.
4. The development of two kinds of spores is known as heterospory.
5. Eg. Selaginella, Marsilea, and Salvinia are some examples of heterosporous pteridophytes.