The following diagram represents which type of symmetry?

Define the following terms:
$(i)$ Incomplete digestive tract
$(ii)$ Complete digestive tract

What is it called when any plane passing through the central axis of the body divides the organism into more than two identical halves?

When the body is externally and internally divided into segments,it is called

Radial symmetry is often exhibited by animals having

What type of body symmetry is found in cockroaches, fish, and humans?