Question

plant life cycle quick check
in moss, the ______ is the dominant generation. (1 point)

• diploid gametophyte
• haploid gametophyte
• haploid sporophyte
• diploid sporophyte

Explanation:

Mosses are non-vascular bryophytes. Their life cycle has two generations: the gametophyte (haploid, $n$) which is the visible, leafy structure that carries out most photosynthesis and is the dominant, long-lived generation, and the small, dependent sporophyte (diploid, $2n$) that grows out of the gametophyte. The other options are incorrect because gametophytes in mosses are haploid, not diploid, and sporophytes are not dominant.

Answer:

B. haploid gametophyte