Cell division itself is a mode of reproduction in

Options

A. Amoeba, Penicillium
B. Chara, Bacteria
C. Chlamydomonas, Penicillium
D. Amoeba, Bacteria

Answer

**Step-by-Step Solution:**

1. **Understanding Cell Division and Reproduction**:
- Cell division is the process where a single cell divides to form two daughter cells. This is a fundamental process in all living organisms, but it is particularly significant in unicellular organisms.
- Reproduction is the biological process by which new individual organisms are produced. In unicellular organisms, reproduction often occurs through cell division.

2. **Identifying Unicellular Organisms**:
- Unicellular organisms, such as amoeba and bacteria, reproduce asexually through cell division. This means that the process of cell division directly leads to the creation of new organisms.

3. **Evaluating the Options**:
- **Option 1: Amoeba and Penicillium**: Amoeba is a unicellular organism (protista), while Penicillium is a multicellular fungus. This option is incorrect.
- **Option 2: Cara and Bacteria**: Cara (likely referring to Chara, a multicellular green algae) is not a unicellular organism, while bacteria are unicellular. This option is incorrect.
- **Option 3: Chlamydomonas and Penicillium**: Chlamydomonas is a unicellular green algae, but Penicillium is a fungus. This option is incorrect.
- **Option 4: Amoeba and Bacteria**: Both amoeba (a protist) and bacteria (a member of the monera kingdom) are unicellular organisms that reproduce through cell division. This option is correct.

4. **Conclusion**:
- The correct answer is **Option 4: Amoeba and Bacteria**, as both are unicellular organisms where cell division serves as a mode of reproduction.