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Protonema is...

Protonema is

A

haploid and is found in mosses

B

diploid and is found in liverworts

C

diploid and is found in pteridophytes

D

haploid and is found in pteridophytes.

Text Solution

Verified by Experts

The correct Answer is:
A
The predominant stage of the life cycle of a moss (bryophyte) is the gametophyte which consist of two stages. The first stage is the protonema stage, which develops directly from a spore. It is a creeping, green, branched and frequently filamentous stage. The second stage is the leafy stage, which develops from the secondary protonema as a lateral bud. It consist of upright, slender axes bearing spirally arranged leaves attached to the soil through multicellular and branched rhizoids. This stage bears the sex organs.
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