Fresh water Amoeba and intestinal Amoeba are alike in

Options

A. possession of single contractile vacuole
B. absence of cilia
C. structure of cyst
D. mechanism of dispersal.

Answer

To answer the question regarding the similarities between freshwater amoeba and intestinal amoeba, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Organisms**:
- Freshwater amoeba (e.g., Amoeba proteus) and intestinal amoeba (e.g., Entamoeba histolytica) are both types of amoebae, which are unicellular eukaryotic organisms.

2. **Analyze the Options**:
- The options provided are:
- A) Possession of single contractile vacuole
- B) Absence of cilia
- C) Structure of food vacuole
- D) Metabolism of the organism

3. **Evaluate Each Option**:
- **Option A (Possession of single contractile vacuole)**:
- Freshwater amoeba typically has a single contractile vacuole for osmoregulation, while intestinal amoeba may have multiple contractile vacuoles. Thus, this option is incorrect.
- **Option B (Absence of cilia)**:
- Both freshwater and intestinal amoebae lack cilia. This is a significant similarity between the two.
- **Option C (Structure of food vacuole)**:
- The structure of food vacuoles may differ between the two types of amoebae due to their different feeding habits and environments. Therefore, this option is not correct.
- **Option D (Metabolism of the organism)**:
- While both amoebae are eukaryotic and share some metabolic pathways, their metabolism can vary based on their environments and lifestyles. Thus, this option is not the best choice.

4. **Conclusion**:
- The most accurate similarity between freshwater amoeba and intestinal amoeba is the **absence of cilia**. Therefore, the correct answer is **Option B**.

### Final Answer:
Freshwater amoeba and intestinal amoeba are alike in the **absence of cilia**.

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