Question

Write briefly on Polymorphism in Obelia?
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Answer 1

Answer:

Polymorphism may be defined as the “phenom­enon of existence of different physiological and morphological forms represented by an extensive range of variation within a single species”.

It may be defined in another way, poly­morphism means “the existence of indi­viduals (zooids) of a single species in more than one forms and functions.”

Answer 2

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Obelia shows polymorphism in which the polyps are for feeding the colony, blastostyles for budding and medusae for disseminating gametes. Advancement of Medusa over Polyp: Medusa exhibits many features of advancement over polyp, few of them are as follows: 1.