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

Options

A. Microscopic organisms
B. Heterotrophic organisms
C. Unicellular organisms
D. Uninucleate organisms

Answer

### Step-by-Step Solution:

1. **Understanding the Reproductive Methods**:
- Amoeba reproduces asexually by a process called **fission**. In this process, the amoeba grows and divides into two equal parts, resulting in two daughter cells. This is specifically known as **binary fission**.
- Yeast, on the other hand, reproduces asexually by a process called **budding**. In budding, a small bud forms on the parent yeast cell, grows, and eventually detaches to become a new individual.

2. **Identifying the Characteristics of the Organisms**:
- Both amoeba and yeast are **unicellular organisms**. This means they consist of a single cell, which is a significant factor in their mode of reproduction.
- Being unicellular limits the complexity of their reproductive strategies compared to multicellular organisms.

3. **Analyzing the Options**:
- **Option A: Microscopic organisms** - While both amoeba and yeast are microscopic, not all microscopic organisms reproduce by fission or budding. This option is too broad and incorrect.
- **Option B: Heterotrophic organisms** - This refers to organisms that cannot produce their own food. While amoeba and yeast are heterotrophic, many heterotrophs reproduce sexually, making this option incorrect.
- **Option C: Unicellular organisms** - This option is correct because both amoeba and yeast are unicellular, and this characteristic is directly related to their asexual reproduction methods.
- **Option D: Uninucleated organisms** - Many organisms, including multicellular ones, can be uninucleated but do not reproduce asexually through fission or budding, making this option incorrect.

4. **Conclusion**:
- The correct answer is **unicellular organisms** because amoeba and yeast reproduce asexually through fission and budding due to their unicellular nature.