Looping and somersaulting types of locomotion are seen in

Options

A. Snail
B. Hydra
C. Amoeba
D. Leech.

Answer

### Step-by-Step Solution:

1. **Understanding the Types of Locomotion**:
- The question asks about "looping" and "somersaulting" types of locomotion. We need to identify which organism exhibits these types of movements.

2. **Identifying Organisms**:
- The options provided are:
- A) Snail
- B) Hydra
- C) Amoeba
- D) Leech

3. **Analyzing Each Option**:
- **Snail**: Snails are known for their crawling movement using a muscular foot. They do not exhibit looping or somersaulting locomotion.
- **Hydra**: Hydra is a cnidarian that exhibits both looping and somersaulting locomotion.
- **Looping**: Involves standing erect, extending the body, and bending, creating a loop-like movement.
- **Somersaulting**: Involves the attachment of tentacles to the substrate and the release of the basal disc, allowing it to move by alternating the points of attachment.
- **Amoeba**: Amoebas move using pseudopodia, which is known as amoeboid movement. This is not looping or somersaulting.
- **Leech**: Leeches move using suckers for attachment and movement, which does not involve looping or somersaulting.

4. **Conclusion**:
- Based on the analysis, the only organism that exhibits looping and somersaulting locomotion is **Hydra**. Therefore, the correct answer is **B) Hydra**.