If earthworm, insect and snail are kept together, with which single word we can represent them?

Options

A. Acoelomates
B. Deuterostomes
C. Protostomes
D. Enterocoelic

Answer

To solve the question of how to represent earthworm, insect, and snail with a single word, we can follow these steps:

### Step 1: Identify the Organisms
- The three organisms mentioned are:
- Earthworm (Phylum: Annelida)
- Insect (Phylum: Arthropoda)
- Snail (Phylum: Mollusca)

### Step 2: Classify the Organisms
- All three organisms belong to the group of invertebrates.
- They can be classified based on their embryonic development.

### Step 3: Understand the Terms
- **Acelomates**: Organisms without a body cavity (e.g., flatworms).
- **Deuterostomes**: Organisms where the anus develops before the mouth during embryonic development (e.g., vertebrates).
- **Protostomes**: Organisms where the mouth develops before the anus during embryonic development (e.g., arthropods, mollusks, annelids).
- **Enterocelic organisms**: Organisms with a coelom formed from the outpocketing of the embryonic gut.

### Step 4: Determine the Correct Classification
- Earthworm (Annelida), insect (Arthropoda), and snail (Mollusca) all develop their mouth before their anus during embryonic development, classifying them as **protostomes**.

### Conclusion
- Therefore, the single word that can represent earthworm, insect, and snail is **"protostomes."**

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