Eye spot of Euglena is a

Options

A. Non-plastid structure found on the side near the middle
B. Non-plastid structure found on the side near the reservoir
C. Plastid structure present near the side reservoir
D. Plastid structure found near the middle.

Answer

To answer the question "Eye spot of Euglena is a", we will analyze the options provided and the characteristics of the eye spot in Euglena step by step.

### Step-by-Step Solution:

1. **Understanding Euglena**:
- Euglena is a unicellular eukaryotic organism that possesses both plant-like and animal-like characteristics. It has chloroplasts for photosynthesis and can also move using a flagellum.

2. **Identifying the Eye Spot**:
- The eye spot, also known as the stigma, is a specialized structure in Euglena that is involved in photoreception, which is the ability to detect light.

3. **Function of the Eye Spot**:
- The primary function of the eye spot is to help Euglena sense light intensity and direction, allowing it to move towards light sources for photosynthesis.

4. **Location of the Eye Spot**:
- The eye spot is located near the reservoir, which is a pocket-like structure where the flagellum is attached.

5. **Determining the Nature of the Eye Spot**:
- The eye spot is described as a non-plastic structure, meaning it is not enclosed by a membrane like plastids (e.g., chloroplasts).

6. **Choosing the Correct Option**:
- Based on the above analysis, the eye spot of Euglena is a non-plastic structure found on the side near the reservoir.

### Final Answer:
The correct answer is **non-plastic structure found on the side near the reservoir**.

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