Chondrichthyes commonly show _______

Options

A. Viviparity
B. Oviparity
C. Hermaphroditism
D. Show asexual mode of reproduction

Explanation

**Step-by-Step Solution:**

1. **Understanding Chondrichthyes**: Chondrichthyes is a class of animals that includes sharks, rays, and skates. They are characterized by having a skeleton made of cartilage rather than bone.

2. **Reproductive Modes**: The question presents four reproductive modes:
- Viviparity: giving birth to live young.
- Oviparity: laying eggs.
- Hermaphroditism: possessing both male and female reproductive organs.
- Asexual reproduction: reproducing without the involvement of gametes.

3. **Analyzing Each Option**:
- **Viviparity**: While some species of Chondrichthyes do exhibit viviparity, it is not the most common mode of reproduction for the entire class.
- **Oviparity**: Many Chondrichthyes lay eggs, making this a common reproductive strategy.
- **Hermaphroditism**: Chondrichthyes are not typically hermaphroditic; they usually have distinct male and female individuals.
- **Asexual Reproduction**: This mode is not characteristic of Chondrichthyes.

4. **Conclusion**: Given the analysis, the most common reproductive mode in Chondrichthyes is oviparity, as many species lay eggs.

5. **Final Answer**: Chondrichthyes commonly show **oviparity**.

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