Subcellular level of body organisation is

Options

A. protozoans
B. porifers
C. prokaryotes
D. non living parts

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the subcellular level of body organization. This refers to the organization that exists below the cellular level.

2. **Identifying Levels of Biological Organization**: Biological organization is structured hierarchically. The levels include:
- Atoms
- Molecules
- Cells
- Tissues
- Organs
- Organ systems
- Organisms

3. **Defining Subcellular Level**: The subcellular level is defined as the level of organization that is smaller than cells, which includes atoms and molecules.

4. **Analyzing the Options**:
- **Protozoans**: These are unicellular eukaryotes, which means they have a cellular level of organization. Thus, they do not fit the subcellular category.
- **Porifera**: This group also exhibits a cellular level of organization, so it is not the correct answer.
- **Prokaryotes**: These can be unicellular or multicellular and also represent a cellular level of organization.
- **Non-living parts**: Atoms and molecules are considered non-living and fall under the subcellular level of organization.

5. **Conclusion**: Based on the analysis, the correct answer to the question is **non-living parts** since they represent the subcellular level of organization.

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