Assertion : Obelia is dimorphic in nature
Reason : Obelia shows polyp and gonangia form

Options

A. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
B. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
C. If the assertion is true but the reason is false
D. If both the assertion and reason are false

Answer

A

Explanation

Hydroid colony of Obelia is dimorphic, exhibiting two types of individuals or zooids which differ both morphologically as well as physiologically. These two zooids are-
(i) Polyps – the nutritive zooid of the colony
(ii) Gonangium – the reproductive zooid.