Answer: A protonema (plural: protonemata) is a thread-like chain of cells that forms the earliest stage of development of the gametophyte (the haploid phase) in the life cycle of mosses.
In which stage and structure of mosses are zygotes formed?
The gametophyte stage produces gametes (by mitosis) which fuse to form a zygote. The zygote divides by mitosis to form the large multicellular sporophyte stage
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Explanation:
