In which of the following is parthenogenesis a normal mode of development ?

Options

A. Cockroach
B. Grass hopper
C. Honeybee
D. Palaemon

Answer

**Step-by-Step Solution:**

1. **Understanding Parthenogenesis**: Parthenogenesis is a form of asexual reproduction where an embryo develops from an unfertilized egg. This means that no sperm is involved in the fertilization process.

2. **Analyzing the Options**:
- **Cockroach**: Cockroaches reproduce sexually, involving both male and female. Thus, parthenogenesis does not occur in cockroaches.
- **Grasshopper**: Similar to cockroaches, grasshoppers also reproduce sexually, requiring the fusion of male and female gametes. Therefore, parthenogenesis is not a mode of reproduction in grasshoppers.
- **Honey Bee**: Honey bees exhibit a unique reproductive strategy. Fertilized eggs develop into female workers, while unfertilized eggs develop into male drones. This means that parthenogenesis occurs in honey bees, specifically for the development of male workers.
- **Palaemon (Prawn)**: Palaemon reproduces sexually, and fertilization is necessary for reproduction. Hence, parthenogenesis is not applicable here.

3. **Conclusion**: Among the given options, honey bee is the only organism where parthenogenesis is a normal mode of development.

4. **Final Answer**: The correct answer is **Honey Bee**.

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