What kind of symmetry does an adult starfish have?

1 Answer
Jan 28, 2017

Pentaradial symmetry.

Explanation:

A star fish in larval stage is bilaterally symmetrical, but it transforms into a pentaradially symmetrical adult after metamorphosis.

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Body of an adult starfish could be divided in two equal halves by cutting along 5 radii. On the oral side of adult you can see five ambulacral grooves, running along five arms.