Malpighian tubules remove excretory products from

Options

A. kidney
B. Haemolymph
C. Alimentary canal
D. None of the above

Answer

**Step-by-Step Solution:**

1. **Understanding Malpighian Tubules**: Malpighian tubules are the excretory structures found in certain arthropods, such as insects. They play a crucial role in the excretion of waste products.

2. **Identifying the Source of Excretory Products**: The question asks from where the Malpighian tubules remove excretory products. The options provided are kidney, haemolymph, elementary canal, and none of the above.

3. **Analyzing the Options**:
- **Kidney**: This is an excretory organ found in vertebrates, not in insects. Therefore, this option is incorrect.
- **Haemolymph**: This is the fluid equivalent to blood in insects. It circulates nutrients and waste products. Malpighian tubules extract waste from this fluid.
- **Elementary Canal**: This is involved in digestion, not excretion. Therefore, this option is also incorrect.
- **None of the Above**: Since we have identified haemolymph as the correct answer, this option is incorrect.

4. **Conclusion**: The Malpighian tubules remove excretory products from the haemolymph. This is because they absorb solutes, water, and waste from the surrounding haemolymph, and the waste is then excreted as solid nitrogenous compounds.

5. **Final Answer**: The correct option is haemolymph.

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