Question

Read the following statements (a - e) and answer as asked (a) In Equisetum, the female gametophyte is retained on the parent sporophyte (b) In Ginkgo, male gametophyte is not independent (c) The sporophyte in Riccia is more developed than that in Polytrichum (d) Sexual reproduction in Volvox is isogamous (e) The spores of slime moulds lack cell walls How many of above statements are correct

• A. Two
• B. Three
• C. Four
• D. One

Answer 1

The Correct Option is D

Let's analyze each of the statements provided, considering botanical knowledge:

1. Statement (a): In Equisetum, the female gametophyte is retained on the parent sporophyte.

   This statement is incorrect. In Equisetum, the gametophytes are independent and not retained on the sporophyte. They develop separately after the spores germinate.

2. Statement (b): In Ginkgo, the male gametophyte is not independent.

   This statement is correct. In Ginkgo, the male gametophyte develops inside the pollen grain and is dependent on the sporophyte for nutrients.

3. Statement (c): The sporophyte in Riccia is more developed than that in Polytrichum.

   This statement is incorrect. Riccia has a simpler sporophyte, usually just a sporangium, while Polytrichum, a moss, has a more developed sporophyte with structures like seta and capsule.

4. Statement (d): Sexual reproduction in Volvox is isogamous.

   This statement is incorrect. Volvox can have anisogamous reproduction, where gametes are of different sizes. Some species may exhibit oogamous reproduction, where a large non-motile female gamete and a smaller motile male gamete are involved.

5. Statement (e): The spores of slime moulds lack cell walls.

   This statement is incorrect. Spores of slime moulds have cell walls, which help them survive adverse conditions.

Upon reviewing the statements, only Statement (b) is correct. Thus, the number of correct statements is One.