Is Coelenterata Radially Symmetrical?

Characteristics. All coelenterates are aquatic, mostly marine. The bodyform is radially symmetrical, diploblastic and does not have a coelom. The body has a single opening, the hypostome, surrounded by sensory tentacles equipped with either nematocysts or colloblasts to capture mostly planktonic prey.

Is Coelenterata segmented?

They have a segmented body like earthworms (having segments- head, thorax and abdomen). > Option C- Coelenterata: Most of the coelenterates are aquatic. ... They do not have segments.

What is polymorphism in Coelenterata?

The occurrence of more than one type of structurally and functionally different. individuals within a population is called polymorphism. The class Hydrozoa of phylum. Coelenterata includes a large number of colonial species that contain more than one form of. individuals which are called zooids.