In some prokaryotes, some membranous extensions are present in the cytoplasm which contain pigments , known as ....

Options

A. Mesosomes
B. Volutin
C. Chromatophore
D. Chromatids

Answer

To solve the question regarding the membranous extensions in prokaryotes that contain pigments, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Prokaryotes**:
- Prokaryotes are unicellular organisms that lack a well-defined nucleus and membrane-bound organelles. They belong to the kingdom Monera, which includes bacteria and cyanobacteria.

**Hint**: Remember that prokaryotes are simpler organisms compared to eukaryotes, lacking complex structures.

2. **Identifying Membranous Extensions**:
- In prokaryotic cells, there are structures known as membranous extensions that can store pigments. These extensions are not typical organelles like those found in eukaryotic cells.

**Hint**: Think about how prokaryotes manage functions that eukaryotes perform with organelles.

3. **Function of Pigments**:
- The pigments stored in these membranous extensions are essential for processes like photosynthesis, which some prokaryotes, especially cyanobacteria, perform.

**Hint**: Consider the role of pigments in capturing light energy for photosynthesis.

4. **Identifying the Correct Term**:
- The specific term for these membranous extensions that contain pigments in prokaryotes is "chromatophore." Chromatophores are vesicles that store pigments necessary for photosynthesis.

**Hint**: Look for terms that relate to color and light absorption, as they are often associated with pigments.

5. **Eliminating Incorrect Options**:
- Other terms mentioned, such as mesosome, volutin, and chromatid, do not refer to structures that specifically store pigments:
- **Mesosome**: Involved in various cellular processes but not specifically for pigment storage.
- **Volutin**: Stores inorganic phosphates, not pigments.
- **Chromatid**: Refers to condensed chromatin during cell division, not related to pigment storage.

**Hint**: Analyze the functions of each term to determine their relevance to the question.

### Final Answer:
The correct answer is **chromatophore**.