Cleidoic egg is an adaptation for

Options

A. Aquatic life
B. Marine life
C. Terrestrial life
D. Aerial life

Answer

**Step-by-Step Text Solution:**

1. **Understanding Cleidoic Eggs**: Cleidoic eggs are a type of egg that has a hard shell. They are primarily found in reptiles and birds. The hard shell serves as a protective barrier.

2. **Function of the Hard Shell**: The hard shell of cleidoic eggs protects the developing embryo from physical damage and desiccation (drying out). This is crucial for survival in terrestrial environments.

3. **Diffusion for Respiration**: Although the shell is hard, it is still permeable to gases. This allows for the exchange of oxygen and carbon dioxide, which is essential for the developing embryo.

4. **Comparison with Aquatic Eggs**: In contrast, aquatic animals (like fish) typically have eggs that are surrounded by a soft jelly-like substance, which does not provide the same level of protection as a hard shell. These eggs are adapted to be laid in water, where they can develop without the risk of drying out.

5. **Conclusion**: Since cleidoic eggs are specifically adapted for life on land (terrestrial life), the correct answer to the question is option C: Terrestrial life.

**Final Answer**: Cleidoic egg is an adaptation for **Terrestrial life** (Option C).

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