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Peculiar water driven tube system is the...

Peculiar water driven tube system is the unique feature of the following group:

A

Echinodermata

B

Arthropoda

C

Annelida

D

Platyhelminthes

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The correct Answer is:
**Step-by-Step Solution:** 1. **Understanding the Question**: The question asks which group has a peculiar water-driven tube system. This indicates that we need to identify the group that possesses this unique feature. 2. **Identifying the Groups**: The groups mentioned in the context are Echinoderms, Arthropods, Annelids, and Platyhelminthes. We need to analyze each group to see if they have a water-driven tube system. 3. **Analyzing Echinoderms**: Echinoderms, such as starfish, are known for their water vascular system. This system is crucial for their locomotion and feeding. It consists of a network of water-filled canals that help in movement and manipulation of their tube feet. 4. **Analyzing Arthropods**: Arthropods, which include insects and crustaceans, have an exoskeleton made of chitin. They do not possess a water-driven tube system; instead, they have other mechanisms for movement and protection. 5. **Analyzing Annelids**: Annelids, or segmented worms, have a segmented body structure that aids in locomotion. They do not have a water vascular system like echinoderms. 6. **Analyzing Platyhelminthes**: Platyhelminthes, or flatworms, are primarily parasitic and do not require a water vascular system. They have a simple body structure and rely on diffusion for nutrient absorption. 7. **Conclusion**: Based on the analysis, the group that possesses a peculiar water-driven tube system is Echinoderms. Therefore, the correct answer is Echinodermata. **Final Answer**: Echinodermata (e.g., starfish). ---

**Step-by-Step Solution:** 1. **Understanding the Question**: The question asks which group has a peculiar water-driven tube system. This indicates that we need to identify the group that possesses this unique feature. 2. **Identifying the Groups**: The groups mentioned in the context are Echinoderms, Arthropods, Annelids, and Platyhelminthes. We need to analyze each group to see if they have a water-driven tube system. 3. **Analyzing Echinoderms**: Echinoderms, such as starfish, are known for their water vascular system. This system is crucial for their locomotion and feeding. It consists of a network of water-filled canals that help in movement and manipulation of their tube feet. ...
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