Protozoans are able to live efficiently due to their

Options

A. Motility
B. Rapid reproduction
C. Ability to manufacture food
D. Specialised organelles.

Answer

**Step-by-Step Solution:**

1. **Understanding Protozoans**: Protozoans are unicellular eukaryotic organisms that exhibit a variety of forms and functions. They are found in diverse environments and play significant roles in ecosystems.

2. **Evaluating the Options**: The question provides four options regarding why protozoans can live efficiently:
- Motility
- Rapid reproduction
- Ability to manufacture food
- Specialized organelles

3. **Analyzing Each Option**:
- **Motility**: While protozoans are capable of movement, which helps them find food and evade predators, motility alone does not account for their overall efficiency in living.
- **Rapid Reproduction**: Protozoans can reproduce quickly, which allows for population growth. However, rapid reproduction does not necessarily equate to living efficiently in terms of survival and function.
- **Ability to Manufacture Food**: Some protozoans can photosynthesize or ingest food, but not all protozoans have this ability. Therefore, this option is not universally applicable to all protozoans.
- **Specialized Organelles**: Protozoans possess specialized organelles that perform specific functions similar to those found in higher animals. These organelles, such as mitochondria for energy production and Golgi apparatus for processing materials, enable protozoans to carry out essential life processes effectively.

4. **Conclusion**: After analyzing all the options, it is clear that the presence of specialized organelles is the primary reason why protozoans can live efficiently. These organelles allow them to perform necessary functions that support their survival and reproduction.

5. **Final Answer**: The correct answer is **specialized organelles**.

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