Protista obtain their food as

Options

A. Photosynthetic
B. Chemosynthesis
C. Heterotrophs
D. Both (A) and (C)

Answer

### Step-by-Step Solution:

1. **Understanding the Kingdom Protista**: The kingdom Protista consists of a diverse group of organisms, which can be classified based on how they obtain their food.

2. **Types of Nutrition in Protista**:
- **Autotrophic Nutrition**: Some protists, like Euglena, can perform photosynthesis because they contain chlorophyll. This allows them to convert sunlight into energy, making their own food.
- **Heterotrophic Nutrition**: Other protists, such as slime molds, do not have chlorophyll and cannot perform photosynthesis. Instead, they depend on other organisms for their food.

3. **Example of Euglena**:
- In the presence of sunlight, Euglena acts as an autotroph by using photosynthesis to create food.
- In the absence of sunlight or under adverse conditions, Euglena can switch to a heterotrophic mode, obtaining nutrients from other sources.

4. **Conclusion**:
- The members of the Protista kingdom exhibit varied nutritional strategies. Some are autotrophs (like Euglena when it performs photosynthesis), while others are heterotrophs (like slime molds).

### Final Answer:
Protista obtain their food through both autotrophic and heterotrophic means, depending on the organism and environmental conditions.

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