Question

In which of the following gametophytes is not independent free living?

• A. Pteris
• B. Marchantia
• C. Pinus
• D. Funaria

Answer 1

The correct option is C

Pinus

The correct option is option B.

Explanation of the correct option:

1. They belong to the group gymnosperm.
2. They are woody perennial plants that are mainly trees.
3. The main plant is sporophyte and heterosporous in nature.
4. They have a well-developed root system.
5. The male and female gametophytes do not have an independent free-living existence.

Explanation of the incorrect options:

Option A:

1. Pteris belong to the group ferns.
2. They are the largest group of vascular plants.
3. Vegetative reproduction may be produced by fragmentation.
4. Sexual reproduction is oogamous.

Option B:

1. It is a member of the group liverworts.
2. They grow in moist, shady habitats.
3. Asexual reproduction occurs by fragmentation.
4. The male and female sex organs are produced on the same or different thalli.

Option D:

1. Funaria is a member of the group moss.
2. They are small-sized and are multicellular and branched.
3. Vegetative reproduction is by fragmentation and budding.
4. Sexual reproduction is through the formation of sex organs, antheridia, and archegonia.

Final answer: In Pinus gametophytes is not independent free living.