Silkworm is differed from prawn and scorpion in having of :-

Options

A. Jointed appendages
B. terrestrial habitat
C. Three pair of legs
D. Open circulation

Answer

To determine how the silkworm differs from the prawn and scorpion, we need to analyze the characteristics of each organism.

### Step-by-Step Solution:

1. **Identify the Organisms**:
- Silkworm (Bombyx mori) is an insect.
- Prawn (e.g., Penaeus) is a crustacean.
- Scorpion (e.g., Scorpio) is an arachnid.

2. **Classification**:
- All three belong to the phylum Arthropoda, which is characterized by jointed appendages and an exoskeleton.
- Within Arthropoda:
- Silkworm is classified under Insecta.
- Prawn is classified under Crustacea.
- Scorpion is classified under Arachnida.

3. **Habitat**:
- Silkworms are terrestrial organisms, primarily living on mulberry trees.
- Prawns are aquatic organisms, found in marine and freshwater environments.
- Scorpions are primarily terrestrial but can also be found in various habitats.

4. **Respiratory System**:
- Silkworms breathe through tracheae (a system of tubes).
- Prawns and scorpions have gills and book lungs respectively for respiration.

5. **Body Structure**:
- Silkworms have a segmented body with three distinct body parts: head, thorax, and abdomen.
- Prawns have a more complex body structure with a carapace and multiple segments.
- Scorpions have a distinct segmented body with a cephalothorax and abdomen.

6. **Legs**:
- Silkworms have three pairs of legs (six legs total).
- Prawns have five pairs of legs (ten legs total).
- Scorpions have four pairs of legs (eight legs total).

7. **Conclusion**:
- The primary difference is in their habitat: Silkworms are terrestrial, while prawns are aquatic. Thus, the correct answer to the question is that the silkworm differs from the prawn and scorpion in having a terrestrial habitat.

### Final Answer:
Silkworm is different from prawn and scorpion in having a terrestrial habitat.

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