MCQ
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.

Answer

  1. Haploid and is found in mosses.

Explanation:

The predominant stage in the life cycle of a moss (bryophyte) is the gametophyte which consists 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 consists 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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