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Question

Which of the following are homosporous pteridophytes?
I. Selaginella II. Lycopodium
III. Salvinia IV. Equisetum

A
I and IV only
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B
II and III only
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C
II and IV only
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D
III and IV only
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Solution

The correct option is C II and IV only
Pteridophytes are classified into two types depending on the types of spores - homosporous and heterosporous. In homosporous pteridophytes, all the spores are of similar kinds. Lycopodium and Equisetum are homosporous pteridophytes.
In heterosporous, two kinds of spores (macro and micro spores) are produced. Selaginella and Salvinia are heterosporous pteridophytes.

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