Question

what is primary and secondary protonema
plz explain this ​

Answer 1

Answer:

Primary protonema is the basic part of the chain that is formed from the spore. The stem or the primary protonema gives out the several branches or rhizoids and leaves, which are termed as secondary protonema. The secondary protonema is developed into the leafy gametophytes as the part of the vegetative reproduction.

Explanation:

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Answer 2

Answer:

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Explanation:

Protonema is a chain of cells that constitute the initial stage in the life cycle of mosses and liverworts.

It looks like a thin thread and classified into primary and secondary protonema.

Primary protonema is the basic part of the chain that is formed from the spore.

The stem or the primary protonema gives out the several branches or rhizoids and leaves, which are termed as secondary protonema.

The secondary protonema is developed into the leafy gametophytes as the part of the vegetative reproduction.

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