Double fertilization is characteristic feature of :-

Options

A. ) Only angiosperm
B. ) Angiosperm and gymnosperm
C. Gymnosperm and pteridophyt
D. Angiosperm and pteridophyte

Answer

**Step-by-Step Solution:**

1. **Understanding Double Fertilization**:
- Double fertilization is a unique process in which two fertilization events occur in the ovule. One pollen grain fertilizes the egg cell to form a zygote (2N), while another pollen grain fuses with two polar nuclei to form the endosperm (3N).

2. **Identifying the Organisms**:
- To determine which group of plants exhibits double fertilization, we need to look at the options provided. The key groups to consider are angiosperms and gymnosperms.

3. **Analyzing the Options**:
- **Option A: Only Angiosperms**: This option suggests that double fertilization is exclusive to angiosperms. This is true, as angiosperms (flowering plants) are the only group that undergoes this process.
- **Option B: Angiosperms and Gymnosperms**: This option is incorrect because gymnosperms do not exhibit double fertilization.
- **Option C: Angiosperms and Pteridophytes**: This option is also incorrect as pteridophytes do not undergo double fertilization.
- **Option D: Gymnosperms and Pteridophytes**: This option is incorrect since neither group exhibits double fertilization.

4. **Conclusion**:
- Based on the analysis, the correct answer is **Option A: Only Angiosperms**. This is because double fertilization is a characteristic feature exclusive to flowering plants (angiosperms).