Botany - Animal Kingdom Question with Solution | TestHub

Almost 80 % of the flatworms are parasitic in nature, while few are free living platyhelminthes. The free-living forms are scavengers or predators. The parasitic species feed on the tissues of the host organism in which they live. Hooks and suckers are present in parasitic forms.

Coelentrata exhibit 2 forms sessile polyp forms and swimming medusa forms.

They have a well-developed circulatory and digestive system. Body contains haemoglobin, which gives them a red colour.