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Question
Sedentary echinoderms are grouped under the class _________
Sedentary echinoderms are grouped under the class _________
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Solution
The correct option is C Echinoidea.
The class Echinoidea contains organisms like the sea urchins, sand dollars and heart urchins. These are known as sedentary type of echinoderms. There are approximately 940 species of echinoids. They have a calcareous shell. They are composed of spherical or disk shaped plates and covered with movable spines. Thus, the correct answer is option C.
The class Echinoidea contains organisms like the sea urchins, sand dollars and heart urchins. These are known as sedentary type of echinoderms. There are approximately 940 species of echinoids. They have a calcareous shell. They are composed of spherical or disk shaped plates and covered with movable spines.
Thus, the correct answer is option C.
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