Which of the following is the correct sequence during alternation of generation in a flowering plant?

Options

A. Sporophyte `to` meiosis `to` garnetophyte `to`
gametes to`to` fertilisation `to` diploid zygote
B. Sporophyte `to` mitosis `to` gametophyte `to`
meiosis `to` sporophyte
C. Haploid gametophyte `to`gametes `to`
meiosis`to`fertilisation `to` diploid sporophyte
D. Sporophyte `to` spores `to` meiosis `to` gametophyte `to` gametes

Answer

**Step-by-Step Solution:**

1. **Understanding Alternation of Generations**: In flowering plants (angiosperms), the life cycle alternates between two main phases: the sporophyte phase and the gametophyte phase.

2. **Identifying the Sporophyte Phase**: The sporophyte is the diploid (2N) phase of the plant. It is the dominant phase in angiosperms.

3. **Meiosis in Sporophyte**: The sporophyte undergoes meiosis, a process that reduces the chromosome number by half, resulting in haploid (1N) cells.

4. **Formation of Gametophyte**: The result of meiosis is the formation of gametophytes, which are haploid structures.

5. **Gametogenesis**: The gametophytes then undergo gametogenesis, which is the process of forming gametes (sperm and egg cells).

6. **Fertilization**: The male and female gametes come together during fertilization, forming a diploid zygote.

7. **Development of Zygote into Sporophyte**: The zygote then develops into a new sporophyte, completing the cycle.

**Correct Sequence**:
- Sporophyte (2N) → Meiosis → Gametophyte (1N) → Gametogenesis → Gametes → Fertilization → Zygote (2N) → Sporophyte

**Final Answer**: The correct sequence during alternation of generation in a flowering plant is: Sporophyte → Meiosis → Gametophyte → Gametogenesis → Gametes → Fertilization → Zygote.

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