slamandra atra is

Options

A. ovoviviparous
B. Oviparous
C. sexually sterile
D. parthenogenetic.

Answer

**Step-by-Step Solution:**

1. **Identify the Organism**: The question asks about "Salamandra atra," which is a species of salamander.

2. **Understand Reproductive Modes**: Salamandra atra is known for its specific reproductive strategy. The options provided include different modes of reproduction: ovoviviparous, oviparous, sexually sterile, and parthenogenesis.

3. **Define Ovoviviparous**: In ovoviviparous reproduction, the eggs develop inside the female's body, and the young are born live. This means that the embryos receive nourishment from the egg yolk and hatch inside the mother.

4. **Evaluate Other Options**:
- **Oviparous**: This mode involves laying eggs that develop outside the mother's body.
- **Sexually Sterile**: This refers to organisms that cannot reproduce.
- **Parthenogenesis**: This is a form of asexual reproduction where an egg develops into a new individual without fertilization.

5. **Conclusion**: Based on the reproductive characteristics of Salamandra atra, it is classified as ovoviviparous, as the young hatch inside the female's body.

6. **Final Answer**: Therefore, the correct answer is that Salamandra atra is **ovoviviparous**.

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