Excretory organs in insects are

Options

A. Malpighian tubules
B. Green glands
C. Kindneys
D. nephridia

Answer

### Step-by-Step Solution:

1. **Identify the Phylum**: Insects belong to the phylum Arthropoda. This is important as it helps categorize the type of excretory organs they possess.

2. **Understand the Excretory System**: The primary excretory organs in insects are known as Malpighian tubules. These are specialized structures that play a crucial role in the excretion of waste products.

3. **Evaluate Other Options**:
- **Green Glands**: These are excretory organs found in crustaceans (like prawns) but not in insects.
- **Kidneys**: These are excretory organs found in higher vertebrates, not in insects.
- **Nephridia**: These are the excretory organs of annelids (like earthworms), not insects.

4. **Conclusion**: Based on the information gathered, the correct answer to the question is that the excretory organs in insects are Malpighian tubules.

### Final Answer:
The excretory organs in insects are Malpighian tubules.

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