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Q:

Which group of animals are named because of their spiny skin and a peculiar water-driven tube system that they use for moving around?

  • 1
    Hemichordata 
  • 2
    Aschelminthes 
  • 3
    Echinodermata 
  • 4
    Mollusca 
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Answer : 3. "Echinodermata "
Explanation :

1. All the creatures of Echinodermata phylum are marine and have thorny bodies.

2. There is a mass flow system in their body.

3. A specific water-conveying canal system is found, which helps in their movement.

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