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Byju's Answer
Standard XII
Biology
Morphology of Cockroach
Which echinod...
Question
Which echinoderm does not possess arms?
A
Asterias
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B
Echinocardium
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C
Ophiura
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D
Astropecten
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Solution
The correct option is
B
Echinocardium
A)
Asterias
(star fish) has five arms.
B)
Echinocardium
is a heart shaped sea urchin which has no arms.
C)
Ophiura
(brittle star) has five arms.
D)
Astropecten
(large star fish) has five arms.
So, the correct answer is '
Echinocardium
'.
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