Amoeba and yeast reproduce asexually by fission and budding respectively, because they are

Options

A. microscopic organism
B. heterotrophic organisms
C. unicellular organisms
D. uninucleate organisms

Answer

**Step-by-Step Solution:**

1. **Understanding the Organisms**:
- Amoeba and yeast are both examples of microorganisms. Amoeba is a protozoan, while yeast is a type of fungus.

2. **Reproductive Methods**:
- Amoeba reproduces asexually through a process called binary fission, where a single cell divides into two identical daughter cells.
- Yeast reproduces asexually through budding, where a new organism develops from an outgrowth or bud on the parent organism.

3. **Characteristics of Amoeba and Yeast**:
- Both organisms are unicellular, meaning they consist of a single cell that carries out all life functions independently.

4. **Asexual Reproduction in Unicellular Organisms**:
- In unicellular organisms like amoeba and yeast, asexual reproduction is the predominant mode of reproduction. This is because it allows for rapid population growth without the complexities of sexual reproduction.

5. **Eliminating Other Options**:
- Microscopic: While both organisms are microscopic, this characteristic does not directly relate to their mode of reproduction.
- Heterotrophic: This refers to their nutritional mode but does not influence their method of reproduction.
- Uninucleate: While amoeba and yeast are uninucleate, this characteristic does not exclusively determine their mode of reproduction since other uninucleate organisms can reproduce sexually.

6. **Conclusion**:
- The correct reason why amoeba and yeast reproduce asexually by fission and budding respectively is that they are unicellular organisms.

**Final Answer**: Amoeba and yeast reproduce asexually by fission and budding respectively, because they are unicellular organisms.

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