Pteridophytes that produce TWO KINDS of spores (macro and micro spores…

Question

Pteridophytes that produce TWO KINDS of spores (macro and micro spores) are called:

Accepted Answer

A. Heterosporous — e.g. Selaginella and Salvinia

Most pteridophytes are homosporous (one kind of spore).
Selaginella and Salvinia are HETEROSPOROUS — produce megaspores and microspores that develop into female and male gametophytes respectively.
This precedes the seed habit.

Answer

Homosporous (all spores similar)

Answer

Isosporous

Answer

Aposporous

Pteridophytes that produce TWO KINDS of spores (macro and micro spores) are called:

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