The gametophyte is not an independent, free-living generation in
- Polytrichum
- Adiantum
- Marchantia
- Pinus
Answer
(4) Pinus
Solution
∵ In bryophytes ( Polytrichum, Marchantia) the gametophyte is the dominant, free-living generation.
∵ In pteridophytes ( Adiantum) the gametophyte (prothallus) is small but free-living.
As per NCERT, in gymnosperms the male and female gametophytes do not have an independent free-living existence; they remain within the sporangia retained on the sporophyte.
∴ Pinus.
Answer: (4)