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In Marchantia , gametophyte starts from ...

In Marchantia , gametophyte starts from spore and ends in

A

zygote

B

spore

C

capsule

D

prothallus

Text Solution

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The correct Answer is:
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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