Protonema is

Options

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.

Answer

A

Explanation

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.