Metaboly occurs in

Options

A. Amoebids
B. Foraminiferans
C. Radiolarians
D. Euglenoids

Answer

**Step-by-Step Solution:**

1. **Understanding Metaboly**: Metaboly is a biological process that involves changes in the shape or structure of an organism. It is a form of morphological adaptation.

2. **Identifying Organisms**: To determine where metaboly occurs, we need to look at different types of organisms and see if they exhibit this process.

3. **Analyzing Options**:
- **Amoebids**: These organisms, such as amoebas, can change shape due to their flexible cell membrane, but this is not classified as metaboly.
- **Foraminiferans**: These are single-celled organisms with shells, and they do not exhibit metaboly.
- **Radiolarians**: These are also single-celled organisms with intricate silica skeletons, and they do not undergo metaboly.
- **Euglenoids**: These are a group of protists that can change their shape significantly, especially in response to environmental conditions, thus exhibiting metaboly.

4. **Conclusion**: Based on the analysis, metaboly occurs in Euglenoids. Therefore, the correct answer is option number 4, Euglenoids.

**Final Answer**: Metaboly occurs in Euglenoids.

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