Star fish is a marine echinoderm. What is the symmetry seen in the larva and adult stages?A. Pentameric radial symmetry is seen in larva and bilateral symmetry in adults.B. Bilateral symmetry is seen in larva and pentameric radial symmetry in adults.C. Pentameric radial symmetry is seen in both larva and adult stages.D. Bilateral symmetry is seen in both larva and adult stages.

The correct answer is:

A. Pentameric radial symmetry is seen in larva and bilateral symmetry in adults.

Explanation:

In the larval stage of a starfish (such as the bipinnaria larva), pentameric radial symmetry is observed. This means the body plan is radially symmetric around a central axis, with five arms or lobes.
In the adult stage of a starfish, bilateral symmetry is dominant. The body is divided into two roughly symmetrical halves along a plane passing from the mouth to the opposite end (the aboral side).
So, the correct option describes the symmetry observed in both larval and adult stages of starfish.