Syngamy means.

Options

A. The fusion of cytoplasm of spores
B. Delayed meiosis
C. Delayed mitosis
D. The fusion of male and female gametes

Answer

**Step-by-Step Solution:**

1. **Understanding Syngamy**: Syngamy refers to the process where two gametes (male and female) fuse together. This is a crucial step in sexual reproduction.

2. **Identifying Gametes**: In flowering plants, the male gamete is typically represented by pollen grains, while the female gamete is found in the ovule.

3. **Fusion Process**: During syngamy, the male gamete (sperm) fuses with the female gamete (egg cell). This fusion results in the formation of a zygote.

4. **Chromosome Count**: The resulting zygote has a diploid chromosome number, which is double that of the haploid gametes. This is because each gamete contributes one set of chromosomes.

5. **Elimination of Other Options**:
- Option A (the fusion of cytoplasm of spore) is incorrect as it does not involve gametes.
- Option B and C (delay meiosis) are also incorrect as they do not pertain to the definition of syngamy.
- Therefore, the correct answer is Option D, which states that syngamy means the fusion of male and female gametes.

**Final Answer**: Syngamy means the fusion of male and female gametes.

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