Contractile vacuol of Amoeba is analogous to vertebrate

Options

A. uriniferous tubules
B. pulsating heart
C. sweat glands
D. rectum

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the organ in vertebrates that is analogous to the contractile vacuole of Amoeba. "Analogous" means that the organs perform similar functions but may have different origins.

2. **Function of the Contractile Vacuole**: The contractile vacuole in Amoeba is responsible for maintaining osmoregulation and excretion. It helps expel excess water that enters the cell, preventing the cell from bursting due to osmotic pressure.

3. **Analyzing the Options**:
- **Uriniferous Tubules**: These are also known as nephrons in the kidneys of vertebrates. Their primary function is to filter blood, maintain water and salt balance, and excrete waste products. This function is similar to that of the contractile vacuole in Amoeba.
- **Pulsating Heart**: The heart's function is to pump blood throughout the body, not related to osmoregulation.
- **Sweat Glands**: These glands are involved in thermoregulation and release sweat, but they do not perform osmoregulation in the same manner as the contractile vacuole.
- **Rectum**: The rectum is part of the digestive system and is involved in the excretion of fecal matter, not in osmoregulation.

4. **Conclusion**: The most analogous structure to the contractile vacuole of Amoeba in vertebrates is the **uriniferous tubules** (nephrons) because both are involved in osmoregulation and excretion.

5. **Final Answer**: The contractile vacuole of Amoeba is analogous to the **uriniferous tubules** in vertebrates.

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