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The gametophyte is not an independent, free-living generation in:

1. Polytrichum
2. Adiantum
3. Marchantia
4. Pinus

Correct answer: Pinus

Solution

In Pinus, the gametophytes are highly reduced and remain dependent on the sporophyte for nutrition and protection. In Polytrichum, Adiantum, and Marchantia, the gametophyte is a free-living, independent phase.

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