Which of the following is a characteristic of the phylum Echinodermata? (2021)

Practice Questions

Q1
Which of the following is a characteristic of the phylum Echinodermata? (2021)
  1. Bilateral symmetry
  2. Radial symmetry in adults
  3. Exoskeleton made of chitin
  4. Presence of a notochord

Questions & Step-by-Step Solutions

Which of the following is a characteristic of the phylum Echinodermata? (2021)
  • Step 1: Understand what a phylum is. A phylum is a group of related animals that share certain characteristics.
  • Step 2: Learn about Echinodermata. This is a phylum that includes animals like starfish, sea urchins, and sea cucumbers.
  • Step 3: Identify a key feature of Echinodermata. One important characteristic is that adult echinoderms have radial symmetry.
  • Step 4: Radial symmetry means that the body can be divided into similar halves around a central axis, like a wheel.
  • Step 5: Conclude that the defining characteristic of Echinodermata is their radial symmetry in adult form.
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