Metanephridia, Malpighian tubules and antennal glands are the excretory organs of the following respectively

Options

A. Hydras, sponges and planarians
B. Prawns, cockroaches and crabs
C. Earthworms, insects and prawns
D. Starfishes, cyclostomes and bony fishes

Answer

To solve the question regarding the excretory organs metanephridia, Malpighian tubules, and antennal glands, we will identify which organisms possess these structures.

### Step-by-Step Solution:

1. **Identify Metanephridia**:
- Metanephridia are excretory organs found in annelids, specifically in earthworms. They function to excrete nitrogenous waste and are associated with the coelomic fluid.
- **Hint**: Think about which group of organisms includes earthworms and has a complex excretory system.

2. **Identify Malpighian Tubules**:
- Malpighian tubules are excretory structures found in terrestrial arthropods, particularly in insects. They are located posterior to the digestive tract and help in the excretion of nitrogenous waste.
- **Hint**: Consider which organisms are classified as terrestrial arthropods and have a specialized system for waste removal.

3. **Identify Antennal Glands**:
- Antennal glands, also known as coxal glands, are found in crustaceans and certain other arthropods. They play a role in excretion and osmoregulation.
- **Hint**: Recall which group of organisms includes prawns and other crustaceans that utilize these glands for excretion.

4. **Match the Excretory Organs with Organisms**:
- Based on the above identification:
- Metanephridia → Earthworms (Annelids)
- Malpighian tubules → Cockroaches (Insects)
- Antennal glands → Prawns (Crustaceans)
- **Hint**: Look for the specific examples of organisms that correspond with each type of excretory organ.

5. **Conclusion**:
- The correct pairing of excretory organs with their respective organisms is:
- Metanephridia → Earthworms
- Malpighian tubules → Cockroaches
- Antennal glands → Prawns
- Therefore, the correct answer is option C.

### Final Answer:
The excretory organs are matched to the following organisms respectively:
- Metanephridia → Earthworms
- Malpighian tubules → Cockroaches
- Antennal glands → Prawns