Which one of the following organisms is correctly matched with its excretory organs?

Options

A. Humans-Kidneys, sebaceous glands and tear glands
B. Earthwork-Pharyngeal, integumentray and septal nephridia
C. Cockroch-Malpighian tubules and enteric caeca
D. Frog-Kidneys, skin and buccal epithelium

Answer

To solve the question "Which one of the following organisms is correctly matched with its excretory organs?", we will analyze each option provided in the question.

### Step-by-Step Solution:

1. **Identify the Excretory Organs of Each Organism**:
- **Humans**: The primary excretory organs are the kidneys, skin, and lungs. Sebaceous glands and tear glands are not excretory organs; they serve different functions.
- **Earthworm**: The excretory system consists of nephridia, which can be categorized into three types: pharyngeal, integumentary, and septal nephridia. This is a correct match.
- **Cockroach**: The excretory organs are the Malpighian tubules. However, the enteric ceca are involved in digestion, not excretion. Thus, this is incorrect.
- **Frogs**: Frogs have mesonephric kidneys, skin, and buccal epithelium. While the skin can assist in excretion, the buccal epithelium does not function in excretion. Therefore, this option is also incorrect.

2. **Evaluate Each Option**:
- **Humans**: Incorrect (sebaceous and tear glands are not excretory organs).
- **Earthworm**: Correct (nephridia are the excretory organs).
- **Cockroach**: Incorrect (enteric ceca are not excretory organs).
- **Frogs**: Incorrect (buccal epithelium does not function in excretion).

3. **Conclusion**: The organism that is correctly matched with its excretory organs is the **Earthworm**.

### Final Answer:
The organism that is correctly matched with its excretory organs is **Earthworm**.

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