Which one of the following has a bilateral symmetry in its body organization?
A. Asterias
B. Sea anemone
C. Nereis
D. Euchinus
Answer: Option A
Solution(By Examveda Team)
Asterias has bilateral symmetry only at larval stagebut fivefold symmetry (pentamerism, a special type of radial symmetry) as adults.Nereis do not possess any symmetry elements in their body organisation.
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