In Marchantia , gametophyte starts from spore and ends in

Options

A. zygote
B. spore
C. capsule
D. prothallus

Answer

To solve the question regarding the life cycle of Marchantia, we need to analyze the stages of the gametophyte generation.

### Step-by-Step Solution:

1. **Understanding Marchantia**: Marchantia is a type of liverwort, which is a non-vascular plant. It reproduces via a life cycle that includes both a gametophyte and a sporophyte generation.

2. **Starting Point - Spores**: The gametophyte generation begins with the release of spores. These spores are produced by the sporophyte generation and are dispersed to germinate into new gametophytes.

3. **Development of Gametophyte**: Once the spores germinate, they develop into a structure known as the prothallus. The prothallus is the gametophyte stage of Marchantia and is responsible for producing gametes.

4. **Formation of Gametes**: The prothallus contains sex organs that produce male and female gametes. The male gametes are produced in antheridia, while the female gametes are produced in archegonia.

5. **Fertilization**: When the male gametes (sperm) swim to the female gametes (eggs) in the presence of water, fertilization occurs. This fusion of gametes leads to the formation of a zygote.

6. **Conclusion**: Therefore, the gametophyte generation in Marchantia starts from spores and ends with the formation of a zygote after fertilization.

### Final Answer:
The correct answer is **A) Zygote**.

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