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Which of the following is a feature of the phylum Echinodermata? (2020)

Practice Questions

Q1
Which of the following is a feature of the phylum Echinodermata? (2020)
  1. Radial symmetry
  2. Exoskeleton made of chitin
  3. Jointed appendages
  4. Body divided into segments

Questions & Step-by-Step Solutions

Which of the following is a feature of the phylum Echinodermata? (2020)
  • Step 1: Understand what phylum Echinodermata is. It includes marine animals like starfish and sea urchins.
  • Step 2: Learn about radial symmetry. This means their body parts are arranged around a central axis, like a wheel.
  • Step 3: Know what a calcareous endoskeleton is. It is a hard internal skeleton made of calcium carbonate.
  • Step 4: Combine these two features: Echinoderms have a body that is symmetrically arranged and a hard internal structure.
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