Vegetative fertilization involves fusion of

Options

A. Two polor nuclei
B. A male gamete and a synergid
C. A male gamete and antipodal cell
D. Nucleus of a male gamete and secondary nucleus.

Answer

**Step-by-Step Solution:**

1. **Understanding Vegetative Fertilization**:
- Vegetative fertilization is a process that occurs in certain plants where fertilization involves the fusion of specific nuclei.

2. **Identifying Key Components**:
- In vegetative fertilization, the key components involved are:
- One male gamete nucleus
- Two polar nuclei (which are part of the embryo sac)

3. **Defining Triple Fusion**:
- This process is also referred to as "triple fusion" because it involves the fusion of one male gamete with two polar nuclei.

4. **Evaluating the Options**:
- Option A: Two polar nuclei - This is incorrect as it lacks the male gamete.
- Option B: A male gamete and a synergit - This is incorrect because synergit assists the pollen tube but does not participate in fertilization.
- Option C: A male gamete and an antipodal cell - This is incorrect as it does not involve the polar nuclei.
- Option D: Nucleus of a male gamete and secondary nucleus - This is correct as it includes the male gamete nucleus and the secondary diploid nucleus.

5. **Conclusion**:
- The correct answer is that vegetative fertilization involves the fusion of the nucleus of a male gamete and the secondary nucleus.

**Final Answer**: The correct answer is the nucleus of a male gamete and secondary nucleus.

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