Paedogenesis is found in the larvae of

Options

A. Taenia
B. Fasciola
C. Rana
D. Butterfly

Answer

**Step-by-Step Solution:**

1. **Understanding Paedogenesis**: Paedogenesis refers to the phenomenon where larvae or immature forms of an organism reproduce before reaching adulthood. This is a form of reproduction that occurs in the juvenile stage rather than the mature stage.

2. **Reproductive Modes**: Organisms can reproduce through two main modes: sexual reproduction and asexual reproduction. In sexual reproduction, organisms typically undergo a juvenile phase before they can reproduce. In contrast, asexual reproduction can occur without the need for maturity.

3. **Identifying the Context**: The question asks specifically about the larvae of certain organisms that exhibit paedogenesis. It is important to identify which organisms reproduce in their larval stage.

4. **Analyzing the Options**:
- **Rana (Frog)**: The larval stage of frogs is called a tadpole. Tadpoles do not reproduce; they undergo metamorphosis to become adult frogs.
- **Butterfly**: Similarly, butterflies do not reproduce in their larval stage (caterpillar); they also undergo metamorphosis to reach adulthood.
- **Tinea (Tapeworm)**: Tapeworms are known for their complex life cycles, but their larvae do not typically reproduce in the larval stage.
- **Fasciola (Fluke)**: Flukes are known to reproduce in their larval stage through a process called parthenogenesis, where the egg develops into an embryo without fertilization.

5. **Conclusion**: Based on the analysis, the organism that exhibits paedogenesis in its larvae is **Fasciola**. The larvae of Fasciola can reproduce asexually through parthenogenesis, making it the correct answer.

**Final Answer**: Paedogenesis is found in the larvae of **Fasciola** (flukes).

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