Relation between structure and size of the body is

Options

A. Anthropometry
B. Allometry
C. Biomechanics
D. Ethnography

Answer

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks about the relationship between the structure and size of the body. This implies that we need to find a term or concept that explains how different body parts relate to the overall size of an organism.

2. **Analyzing the Options**:
- **Anthropometry**: This is the study of measuring the size of different body parts. However, it does not involve comparing these sizes to the overall body size. Therefore, it does not answer the question.
- **Allometry**: This term refers to the study of the relationship between the size of an organism and the size of its parts. It involves comparing the size of a specific organ or body part to the total size of the body. This indicates a direct relationship between structure and size, making it a strong candidate for the answer.
- **Biomechanics**: This field studies the mechanics of living systems, focusing on forces and movements rather than the relationship between size and structure. Thus, it is not relevant to the question.
- **Ethnography**: This is the scientific study of cultures and populations, which does not pertain to biological structures or sizes. Hence, it is also not the correct answer.

3. **Identifying the Correct Answer**: Based on the analysis, **Allometry** is the correct term that describes the relationship between structure and size of the body, as it involves comparing the size of specific body parts to the overall size of the organism.

4. **Final Answer**: The correct answer is **Allometry**.