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Protonema

A. is a stage of gametophytic generation.

B. is a creeping, green, branched and develops directly from a spore.

C. produces lateral bud which forms leafy plant body.

D. All of the above

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Correct Answer : A.


A protonema is a creeping, green, filamentous, thread-like chain of cells which is produced by the germination of the spores and forms the earliest stage (the haploid phase) of a bryophyte life cycle. When a moss first grows from the spore, it grows as a protonema which develops into a leafy gametophore.

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