Plastids are seen in all plant cells and also in

Options

A. Animals
B. Bacteria
C. Euglenoids
D. all the above

Answer

To answer the question "Plastids are seen in all plant cells and also in," we will analyze the options provided and determine where plastids can be found.

### Step-by-Step Solution:

1. **Understanding Plastids**:
- Plastids are organelles found in plant cells and some other organisms. They are involved in various functions such as photosynthesis, storage of products, and synthesis of molecules like fatty acids and terpenes.

2. **Evaluating the Options**:
- **Option 1: Animals**:
- Animals do not have plastids. They have other organelles but lack plastids, which are specific to plant cells and some microorganisms.
- **Conclusion**: This option is incorrect.

- **Option 2: Bacteria**:
- Bacteria are prokaryotic organisms and do not possess plastids. They have simpler structures and do not contain membrane-bound organelles like plastids.
- **Conclusion**: This option is also incorrect.

- **Option 3: Euglenoids**:
- Euglenoids are unicellular eukaryotic microorganisms that can photosynthesize due to the presence of plastids. They contain chlorophyll, which allows them to perform photosynthesis similar to plants.
- **Conclusion**: This option is correct.

- **Option 4: All of the above**:
- Since options 1 and 2 are incorrect, this option cannot be correct either.
- **Conclusion**: This option is incorrect.

3. **Final Answer**:
- Based on the analysis, the correct answer is **Euglenoids** (Option 3), as they are the only group among the options that contain plastids.