Mixotrophic nutrition is found in

Options

A. Amoeba
B. Navicula
C. Plasmodium
D. Euglena

Answer

**Step-by-Step Solution:**

1. **Understanding Mixotrophic Nutrition:**
- Mixotrophic nutrition refers to a mode of nutrition where an organism can utilize both autotrophic and heterotrophic methods to obtain energy and nutrients. This means it can produce its own food through photosynthesis (autotrophic) and also consume organic material from other organisms (heterotrophic).

2. **Identifying Organisms:**
- The question asks which organisms exhibit mixotrophic nutrition. We need to evaluate the options provided (though not listed here) and determine which organisms can perform both types of nutrition.

3. **Evaluating Amoeba:**
- Amoeba is known to primarily exhibit heterotrophic nutrition, specifically holozoic nutrition, where it ingests complex organic food. It does not perform photosynthesis, thus it does not have mixotrophic nutrition.

4. **Evaluating Navicula:**
- Navicula is a type of diatom. Diatoms are autotrophic organisms that can perform photosynthesis. They do not exhibit heterotrophic nutrition, so they cannot be classified as mixotrophic.

5. **Evaluating Plasmodium:**
- Plasmodium is a parasitic organism that relies entirely on heterotrophic nutrition. It cannot perform photosynthesis and thus does not exhibit mixotrophic nutrition.

6. **Evaluating Euglena:**
- Euglena is a protist that can perform both photosynthesis (autotrophic) and absorb nutrients from its environment (heterotrophic). This dual capability qualifies Euglena as a mixotrophic organism.

7. **Conclusion:**
- Based on the evaluations, the organism that exhibits mixotrophic nutrition is Euglena. Therefore, the correct answer to the question is Euglena.

**Final Answer:**
Mixotrophic nutrition is found in Euglena.

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