A fern prothallus is bisexual. If fertilization takes place between their gametes then it is known as

Cross fertilization

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Self fertilization

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Isogamous

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Viviparous

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Solution

The correct option is B Self fertilization
Self-fertilization is fusion of male and female gametes (sex cells) produced by the same individual. Self-fertilization occurs in bisexual organisms. But in ferns self fertilisation is prevented by various mechanisms.
Hence the correct option is B.

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Prothallus (gametophyte) gives rise to fern plant (sporophyte) without fertilization. It is

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