Flagellation in Euglena is

Options

A. Uniflagellation and stichonematic
B. Isokont and whiplash type
C. Heterokont and whiplash
D. Heterokont and stichonematic

Answer

### Step-by-Step Solution:

1. **Understanding Euglena**:
- Euglena is a single-celled organism classified under the kingdom Protista. It is a eukaryotic organism, meaning it has a defined nucleus and organelles.

2. **Nutrition Mode**:
- Euglena exhibits a unique nutritional strategy known as facultative heterotrophy. This means that while it primarily performs photosynthesis to produce its own food, it can also absorb nutrients from its environment when conditions are unfavorable for photosynthesis.

3. **Flagellation in Euglena**:
- Euglena possesses two flagella, which are whip-like structures that aid in locomotion. The flagella in Euglena are of two different types, which is a characteristic known as heterochont flagellation.

4. **Characteristics of Flagella**:
- The two flagella in Euglena differ in length and structure. One flagellum is long and the other is short. This dissimilarity in flagella is what defines the heterochont type.

5. **Stichonymatic Structure**:
- Additionally, the flagella of Euglena are described as stichonymatic, meaning that the longer flagellum has hair-like structures (or mastigonemes) on one side, which aid in its movement.

6. **Conclusion**:
- Therefore, the flagellation in Euglena can be accurately described as heterochont and stichonymatic.

### Final Answer:
The flagellation in Euglena is heterochont and stichonymatic.

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