The examples of heterosporous pteridophytes are

Lycopodium and Pteris

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Selaginella and Psilotum

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Selaginella and Salvinia

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Dryopteris and Adiantum

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Solution

The correct option is C Selaginella and Salvinia
Heterospory produces spores of two different sizes and of two different developmental patterns

smaller male or microspores

larger female or megaspores.

Heterospory is the most important evolutionary development in the vascular plants because it has ultimately led to seed development, e.g., Selaginella, Salvinia, Azolla, etc.

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