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Question

Genera like Selaginella and Salvinia produce two kinds of spores. Such plants are known as:

A
Heterosorus
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B
Homosporous
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C
Heterosporous
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D
Homosorus
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Solution

The correct option is C Heterosporous
Based on the number of types of spores produced, pteridophytes can be classified into the following two types:
1. Homosporous - Most pteridophytes are of this type. They produce all spores of similar kind. Example - Dryopteris
2. Heterosporous - Some genera like Selaginella and Salvinia produce two kinds of spores, macro (large) and micro (small) spores.

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