The male and female reproductive organs of several pteridophytes and gymnosperms are comparable to floral structures of angiosperms. Make an attempt to compare the various reproductive parts of pteridophytes and gymnosperms with reproductive structures of angiosperms.

In Bryophytes male and female sex organs are called ____________ and __________.

Why are bryophytes called the amphibians of the plant kingdom?

Heterospory i.e., formation of two types of spores – microspores and megaspores is a characteristic feature in the life cycle of a few members of pteridophytes and all spermatophytes. Do you think heterospory has some evolutionary significance in plant kingdom?

How far does Selaginella one of the few living members of lycopodiales (pteridophytes) fall short of seed habit.