Question

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☛ write short note on protonema​

Answer 1

Answer: Biosphere is the narrow zone of contact between the land,water and earth which interact with each other to support human life....

Explanation:

Answer 2

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. ... Moss spores germinate to form an alga-like filamentous structure called the protonema. It represents the juvenile gametophyte.