Which of the following is viviparous and bring forth their young alive ?

Options

A. (a) Hippocampus
B. (b) Shark ( Scoliodon )
C. (c) Anabas
D. (d) Trygon

Answer

To determine which organism is viviparous and brings forth their young alive, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Definitions**:
- **Viviparous**: Organisms that give birth to live young, with the development of the fetus occurring inside the mother.
- **Oviparous**: Organisms that lay eggs, with the development of the fetus occurring outside the mother's body in egg shells.
- **Ovoviviparous**: Organisms that lay eggs that hatch inside the mother's body, but the young are born live.

2. **Analyze the Options**:
- We need to evaluate each option provided in the question to see which one is viviparous.

3. **Evaluate Each Organism**:
- **Hippocampus (Seahorse)**: This organism is ovoviviparous. The female lays fertilized eggs in the male's brood pouch, where they develop until they are ready to be born. Thus, it does not qualify as viviparous.
- **Shark (Scoliodon laticaudus)**: This organism is viviparous. It gives birth to live young, making it a suitable candidate for our answer.
- **Anabas (Walking Fish)**: This organism is oviparous, meaning it lays eggs, so it does not qualify as viviparous.
- **Trigon (Stingray)**: This organism is also oviparous, laying eggs, which disqualifies it from being viviparous.

4. **Identify the Correct Answer**:
- After evaluating the options, the only organism that is viviparous and brings forth young alive is the **Shark (Scoliodon laticaudus)**.

5. **Conclusion**:
- Therefore, the correct answer to the question is **B) Shark**.