Eggs of Anopheles are

Options

A. Singly laid with air floats
B. Singly laid without air floats
C. Laid in groups with float
D. Laid in groups without float.

Answer

**Step-by-Step Solution:**

1. **Identify the Organism**: The question refers to the eggs of Anopheles, which is a genus of mosquitoes. Specifically, it is important to note that Anopheles mosquitoes are known vectors for malaria.

2. **Understand the Life Cycle**: Anopheles mosquitoes undergo a complete metamorphosis that includes four stages: egg, larva, pupa, and adult. The first three stages (egg, larva, pupa) are aquatic, meaning they develop in water.

3. **Egg Laying Behavior**: Female Anopheles mosquitoes lay their eggs in water. Unlike some other mosquito species that lay eggs in clusters, Anopheles mosquitoes lay their eggs singly.

4. **Egg Arrangement**: The eggs are not just laid individually; they are laid in a way that they stick together, forming a structure that resembles a raft. This raft can contain approximately 100 to 400 eggs.

5. **Buoyancy Mechanism**: The eggs have air bubbles that help them float on the water's surface. These bubbles are located at the upper end of the raft, allowing the eggs to remain buoyant.

6. **Conclusion**: Based on the above points, the correct answer to the question about the eggs of Anopheles is that they are laid singly but stick together to form a raft-like structure.

**Final Answer**: The eggs of Anopheles are laid singly and stick together to form a raft.

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