Question

Gemmae are present in : 

• A. Some Liverworts
• B. Mosses
• C. Pteridophytes
• D. Some Gymnosperms

Answer 1

The Correct Option is A

To determine in which group gemmae are present, let's explore what gemmae are and their role in plant biology.

Explanation of Gemmae:

Gemmae are small reproductive structures in some non-vascular plants such as liverworts and mosses. These are a form of asexual reproduction, where they allow the plant to propagate without the need for seeds. Gemmae are usually found in little cup-like structures called gemma cups and are capable of developing into a new plant genetically identical to the parent plant.

Analysis of Options:

1. Some Liverworts: This is the correct answer. Gemmae are commonly found in liverworts, which utilize these structures for asexual reproduction.
2. Mosses: While mosses do have structures for asexual reproduction and sometimes have similar reproductive mechanisms, gemmae are specifically associated with liverworts.
3. Pteridophytes: These are vascular plants that reproduce via spores rather than gemmae.
4. Some Gymnosperms: These are mostly seed-producing plants that do not produce gemmae for reproduction. They reproduce through seeds rather than asexual means like Gemmae.

Conclusion:

Gemmae are prominent in some liverworts, which use them as a means of vegetative propagation. Therefore, the correct answer is Some Liverworts.