The symmetry found in an animal which can be divided into indentical left and right halves in only one plane is:-

Options

A. Spherical
B. Bilateral
C. Radial
D. Biradial

Answer

To determine the type of symmetry found in an animal that can be divided into identical left and right halves in only one plane, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Symmetry**:
- Symmetry in animals refers to the arrangement of body structures. The main types of symmetry are spherical, bilateral, radial, and bi-radial.

2. **Analyzing the Options**:
- **Spherical Symmetry**: This type of symmetry allows an organism to be divided into identical halves by any plane that passes through the center. Therefore, it does not fit our requirement of being divided into identical left and right halves in only one plane.

- **Bilateral Symmetry**: This type of symmetry means that the organism can be divided into two identical halves (left and right) along a single plane. This is the correct option for our question.

- **Radial Symmetry**: In this type, organisms can be divided into identical halves by multiple planes that pass through the center. A classic example is a starfish, which showcases this symmetry. Hence, it does not meet the criteria of being divided into identical halves in only one plane.

- **Bi-radial Symmetry**: This symmetry is a combination of bilateral and radial symmetry and does not apply to our question as it involves features of both types.

3. **Conclusion**:
- The only type of symmetry that allows an animal to be divided into identical left and right halves in only one plane is **Bilateral Symmetry**.

### Final Answer:
The symmetry found in an animal which can be divided into identical left and right halves in only one plane is **Bilateral Symmetry**.

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