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

Options

A. Humans - Kidneys, sebaceous gland and tear glands
B. Earthworm - Pharyngeal, integumentary and septal glands
C. Cockroach - 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 need to analyze each option provided and determine if the excretory organs listed are accurate for the respective organisms.

### Step-by-Step Solution:

1. **Option 1: Humans - Kidneys, Sebaceous Gland, and Tail Glands**
- Humans primarily excrete waste through the kidneys, which are the main excretory organs.
- Sebaceous glands are not excretory organs; they produce oil for the skin.
- Tail glands are not relevant to human excretion.
- **Conclusion**: This option is incorrect.

2. **Option 2: Earthworm - Pharyngeal, Integumentary, and Septal Glands**
- Earthworms excrete waste using nephridia, which include three types: septal nephredia, integumentary nephredia, and pharyngeal nephredia.
- These nephridia are responsible for the excretion of waste through nephridial pores.
- **Conclusion**: This option is correct.

3. **Option 3: Cockroach - Malpighian Tubules and Enteric Caeca**
- Cockroaches primarily use Malpighian tubules for excretion, which eliminate uric acid.
- Enteric caeca are involved in digestion, not excretion.
- **Conclusion**: This option is incorrect.

4. **Option 4: Frog - Kidneys, Skin, and Buccal Epithelium**
- Frogs excrete waste through their kidneys, skin, and cloaca.
- The buccal epithelium is primarily involved in respiration, not excretion.
- **Conclusion**: This option is incorrect.

### Final Answer:
The correctly matched organism with its excretory organs is **Option 2: Earthworm - Pharyngeal, Integumentary, and Septal Glands**.

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