In some animal groups, the body is found divided into compartments with serial repetition of at least some organs.This characteristic feature is called

Options

A. segmentation
B. metamerism
C. metagenesis
D. metamorphosis

Explanation

To solve the question regarding the characteristic feature of some animal groups where the body is divided into compartments with serial repetition of at least some organs, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks for a term that describes the division of an animal's body into compartments, where there is a serial repetition of some organs.

2. **Analyzing the Options**: We have four options to consider:
- **Segmentation**
- **Metamerism**
- **Metagenesis**
- **Metamorphosis**

3. **Evaluating Each Option**:
- **Segmentation**: This refers to the division of the body into segments, but does not necessarily imply the repetition of organs. Therefore, this option is incorrect.
- **Metamerism**: This is the correct term. It describes the phenomenon where the body is divided into a linear series of segments (metameres) that contain repeated organs. This fits the description given in the question.
- **Metagenesis**: This refers to the alternation of generations between asexual and sexual reproduction. It does not relate to body segmentation or organ repetition, making it incorrect.
- **Metamorphosis**: This is the process of development after birth or hatching, which does not pertain to body segmentation or organ repetition. Hence, this option is also incorrect.

4. **Conclusion**: After evaluating all the options, the correct answer is **Metamerism**, as it accurately describes the characteristic feature of body segmentation with organ repetition.

### Final Answer:
The characteristic feature is called **Metamerism**.