Question

Male and female gametophytes are Independent and free-living In?

• A. Sphagnum
• B. Pinus
• C. Castor
• D. Mustard

Answer 1

The correct option is A

Sphagnum

The correct option is A

Explanation of correct option:

Gametophytes:

1. It is the structure that has the gametes.
2. In a flowering plant, the male gametophyte is a pollen grain which is known as a microgametophyte and the female gametophyte is an embryo sac known as a megagametophyte.
3. Sphagnum belongs to bryophyte in which the male and female gametophyte is found to be free-living and independent while comparing it with other plants such as mustard, castor, and Pinus.

Explanation of incorrect options:

Option B -

1. Pinus belongs to gymnosperm which has a sporophytic main plant body.
2. The gametophyte is severely depleted and completely reliant on the sporophyte.

Option C -

1. Castor belongs to angiosperms that have a sporophytic main plant body.
2. The gametophyte is severely depleted and completely reliant on the sporophyte.

Option D -

1. Mustard belongs to angiosperms that have a sporophytic main plant body.
2. The gametophyte is severely depleted and completely reliant on the sporophyte.

Final answer: Male and female gametophytes are Independent and free-living in sphagnum.