Question

Animal which exhibit radial symmetry are (A) Sessile animals (B) Plank tonic forms (C) Sluggish animals (D) All the above​

Answer 1

Answer:

Correct option is

B

Coelenterata and echinodermata

Radial symmetry is the arrangement of body parts in which an organism ca be divided into two equal halves from the central axis. Porifera are asymmetrical animals. Coelenterates are radially symmetrical. Platyhelminthes, Arthropods and Mollusca animals are bilaterally symmetrical. Adult Echinodermata animals are also radially symmetrical. Thus, the correct answer is option B.