Question

Double fertilization is a characteristic feature of which group of plants?

• A. Bryophytes
• B. Gymnosperms
• C. Pteridophytes
• D. Angiosperms

Hint:

*Key concept:* Double fertilization occurs in angiosperms and is essential for seed development. One sperm forms the zygote, and the other forms the endosperm. *Remember:* It’s only in angiosperms, not in other plant groups like Bryophytes or Gymnosperms.

Answer 1

The Correct Option is D

To address the issue, a comprehension of double fertilization and its characteristic plant group is required.

1. Definition of Double Fertilization

- Double fertilization is a distinctive plant reproductive mechanism.
- In this mechanism, two male gametes (sperm cells) fertilize cells within the female gametophyte.
- One sperm cell fuses with the egg cell, yielding a zygote (which develops into the embryo).
- The second sperm cell fuses with two polar nuclei, forming the endosperm, which provides sustenance for the developing embryo.

2. Plant Groups Exhibiting Double Fertilization

- Double fertilization is exclusive to angiosperms, also recognized as flowering plants.
- Examples of angiosperms encompass roses, mangoes, grasses, and numerous other species.
- This process facilitates the efficient development of seeds with stored nourishment in angiosperms.

3. Other Plant Groups:

- Gymnosperms, such as pine trees, do not undergo double fertilization.
- Lower plant forms, including ferns and mosses, also lack this characteristic.

Final Determination:

Double fertilization is a defining trait of angiosperms (flowering plants).