Question

explain the protonema stage in bryophytes' life cycle

Answer 1

A protonema (plural: protonemata) is a thread-like chain of cells that forms the earliest stage (the haploid phase) of in the life cycle of mosses andliverworts . ... Moss spores germinate to form an alga-like filamentous structure called theprotonema. It represents the juvenile gametophyte.
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Answer 2

A moss SPORE germinates and develops into a green mass of thin threads called the PROTONEMA. The protonema, a phase in the gametophyte stage of the life cycle, resembles a filamentous green alga.

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