Question

If a seed is defined as an ovule modified as a result of fertilization, one may expect to find seeds in

• A. gymnosperms only
• B. angiosperms only
• C. all vascular plants
• D. all phanerogams

Answer 1

The correct option is D

all phanerogams

The correct option is D:

Explanation of the correct option :

Option D:

1. All phanerogams produce seeds.
2. Phanerogams include gymnosperms and angiosperms.
3. Gymnosperms bear naked seeds and in angiosperms, seeds are present within the ovary wall.
4. Therefore, Phanerogams possess flowers and seeds.
5. It includes both gymnosperms and angiosperms.

Explanation of the incorrect option :

Option A :

1. Gymnosperms belong to phanerogams and produce naked seeds.
2. Their ovules are not enclosed by the ovary wall.

Option B :

1. Angiosperms belong to phanerogams.
2. They bear seeds inside the fruit.

Option C :

1. Vascular plants include ferns, conifers, gymnosperms, and angiosperms.
2. Out of these, only gymnosperms and angiosperms produce seeds.

Final answer: If a seed is defined as an ovule modified as a result of fertilization, one may expect to find seeds in all phanerogams.