Double fertilization occurs among

Options

A. Algae
B. Bryophytes
C. Angiosperms
D. Brassicaceae

Answer

**Step-by-Step Solution:**

1. **Understanding Double Fertilization**: Double fertilization is a unique reproductive process where two fertilization events occur in the ovule of a flowering plant. This process is primarily associated with angiosperms (flowering plants).

2. **Process of Double Fertilization**:
- When pollen grains land on the stigma of a flower, they germinate and form a pollen tube.
- The pollen tube carries two male gametes down through the style to the ovule.
- One male gamete fertilizes the egg cell, forming a diploid zygote (2N).
- The other male gamete fuses with two polar nuclei in the central cell of the ovule, forming a triploid cell (3N) that will develop into the endosperm, which nourishes the developing embryo.

3. **Identifying the Group Where Double Fertilization Occurs**:
- Double fertilization is a characteristic feature of angiosperms.
- Other groups like algae, bryophytes, and gymnosperms do not exhibit this process. Their fertilization mechanisms are simpler and do not involve the formation of a triploid endosperm.

4. **Conclusion**: Based on the above information, double fertilization occurs only in angiosperms. Therefore, the correct answer to the question is "angiosperms".

**Final Answer**: Double fertilization occurs among angiosperms (flowering plants).

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