Final answer:
The chromosome complement in a moss protonema is haploid, represented by 'n'. In the life cycle of a moss, the gametophyte stage is dominant and haploid, meaning the correct answer is (b) n.
Step-by-step explanation:
The chromosome complement in a moss protonema is typically haploid, which is represented by 'n'. When a moss spore germinates, it grows into a protonema, which is the initial stage of the gametophyte. This means the correct answer to the question is (b) n. It is important to understand that in the life cycle of a moss, alternation of generations occurs, and the gametophyte stage is dominant and haploid; the sporophyte stage is diploid.
Considering other review questions, meiosis typically produces four haploid cells, and this is crucial for sexual reproduction in organisms that undergo this process. A diploid cell has twice the number of chromosomes as a haploid cell. In the context of mosses, the mature gametophyte and the spores are haploid (n), while the sporophyte is diploid (2n).