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Q: Which of the following feature is true about the phylum Echinodermata?
  • A. Roundworms, Pseudocoelomate
  • B. Gastrovascular cavity present
  • C. Gastrovascular Cavity, flatworms, acoelomates
  • D. Coelom present , bilateral symmetry
Correct Answer: Option D - Echinoderms have a coelom, which is a fluid-filled cavity that separates the gut from the body wall. This allows them to have more complex organs and systems, such as a circulatory system, a nervous system and a digestive system. Echinoderms have bilateral symmetry, which means their body can be divided into two equal halves along only one plane. This plane passes through the central axis of the body.
D. Echinoderms have a coelom, which is a fluid-filled cavity that separates the gut from the body wall. This allows them to have more complex organs and systems, such as a circulatory system, a nervous system and a digestive system. Echinoderms have bilateral symmetry, which means their body can be divided into two equal halves along only one plane. This plane passes through the central axis of the body.

Explanations:

Echinoderms have a coelom, which is a fluid-filled cavity that separates the gut from the body wall. This allows them to have more complex organs and systems, such as a circulatory system, a nervous system and a digestive system. Echinoderms have bilateral symmetry, which means their body can be divided into two equal halves along only one plane. This plane passes through the central axis of the body.