Green glands present in some arthropods help in

Options

A. Respiration
B. Excretion
C. Digestion
D. Reproduction

Answer

**Step-by-Step Solution:**

1. **Identify the Organ**: The question refers to "green glands" which are also known as "antennal glands."

2. **Understand the Function**: Green glands are primarily associated with excretion in certain arthropods, particularly crustaceans.

3. **Location of Green Glands**: These glands are located near the base of the antennae in crustaceans.

4. **Structure of Green Glands**: The green glands consist of three main parts:
- **Antennal Sac (Ancic)**: This is the first part of the green gland.
- **Labyrinth**: This is the second part and is the main excretory component.
- **Bladder**: This is the third part that helps in the storage of excretory products.

5. **Conclusion**: Since the primary function of green glands (antennal glands) is to facilitate the excretion of waste products, the correct answer to the question is that green glands help in excretion.

6. **Final Answer**: Therefore, the answer is option number 2: excretion.

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