GENERAL HISTOLOGY

Detailed explanation-1: -Bilateral symmetry is seen in larva and pentameric radial symmetry in adults.

Detailed explanation-2: -Starfish typically show pentameral symmetry, and they are typically similar in shape to a pentagram.

Detailed explanation-3: -As the starfish’s body is organized into five rays, we say that the symmetry is pentaradial. The starfish also has radial symmetry where several longitudinal axes divide the animal’s body into similar parts.

Detailed explanation-4: -Pentaradial symmetry is a type of radial symmetry, which is a characteristic of echinoderms, in which body parts are arranged along five rays of symmetry. It means the organism is in five parts around a central axis.

Detailed explanation-5: -There are close to 2, 000 species of sea stars in the world’s oceans. Most species have five arms, but some have many more-even as many as 40!