Fern prothallus is developed from

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(C) In ferns,the life cycle involves an alternation of generations. The diploid sporophyte produces haploid spores through meiosis within sporangia. W

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Spore

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(C) In ferns,the life cycle involves an alternation of generations. The diploid sporophyte produces haploid spores through meiosis within sporangia. When these spores land on a suitable substrate,they germinate to form a small,heart-shaped,independent,photosynthetic gametophyte known as the prothallus. Therefore,the prothallus develops directly from the spore.

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