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Questions  

Protonema is the juvenile filamentous gametophytic stage seen in the life cycle of

a
Polytrichum
b
Marchantia
c
Fucus
d
Ectocarpus

detailed solution

Correct option is A

Polytrichum is an example of mosses. The predominant stage in the life cycle of a moss is the gametophyte which consists of two stages. The first stage is the juvenile protonema and second stage is the adult leafy gametophytic stage called gametophore.

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Which one of the following is common to multicellular fungi, filamentous algae and protonema of mosses?


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