Home › CBSE Class 11 › biology › Plant Kingdom — Algae (Chlorophyceae/Phaeophyceae/Rhodophyceae), Bryophytes, Pteridophytes, Gymnosperms, Angiosperms › Pteridophytes that produce TWO KINDS of spores (…
Pteridophytes that produce TWO KINDS of spores (macro and micro spores) are called:
AHeterosporous — e.g. Selaginella and Salvinia
BHomosporous (all spores similar)
CIsosporous
DAposporous
Answer & Solution
Correct 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.
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