Green glands are

Options

A. Respiratory organs in insects
B. Excretory organs in insects
C. Respiratory organs in crustaceans
D. Excretory organs in crustaceans

Answer

**Step-by-Step Solution:**

1. **Understanding the Term "Green Glands":**
Green glands are specialized organs found in certain organisms, particularly crustaceans.

2. **Identifying the Function of Green Glands:**
The primary function of green glands is excretion. They help in the removal of waste products from the body.

3. **Locating Green Glands in Organisms:**
Green glands are specifically found in crustaceans, which include animals like crabs, lobsters, and shrimp.

4. **Distinguishing from Other Organs:**
It is important to differentiate green glands from other organs:
- They are not respiratory organs; respiratory organs in insects are called trachea.
- The excretory organs in insects are known as Malpighian tubules.
- Crustaceans have gills for respiration, not green glands.

5. **Reason for the Name "Green Glands":**
The name "green glands" comes from the pale green color of the excretory products they produce.

6. **Conclusion:**
Therefore, the correct identification of green glands is that they are the excretory organs found in crustaceans.

**Final Answer:**
Green glands are the excretory organs in crustaceans.

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