S - Statement: Some species of Coelenterata e | vedclass

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(C) $1$. Polymorphism is a phenomenon where an organism exists in more than one morphological form. In $Coelenterata$ (Cnidaria),many species exhibit

Vedclass · Accepted Answer

$S$ is true and $R$ is false.

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(C) $1$. Polymorphism is a phenomenon where an organism exists in more than one morphological form. In $Coelenterata$ (Cnidaria),many species exhibit polymorphism by existing in two body forms: polyp and medusa.$2$. The polyp form is typically sessile and cylindrical (e.g.,$Hydra$,$Adamsia$),while the medusa form is umbrella-shaped and free-swimming (e.g.,$Aurelia$).$3$. In the life cycle of $Obelia$,both forms alternate (metagenesis). The polyp produces medusae asexually,and the medusae produce polyps sexually.$4$. Therefore,the statement $S$ is true. However,the reason $R$ is false because the medusa is typically the sexual stage,not the asexual stage.

Column-$I$	Column-$II$
$P$. Brain coral	$I$. Adamsia
$Q$. Portuguese man-of-war	$II$. Meandrina
$R$. Sea anemone	$III$. Hydra
$S$. Hydra	$IV$. Gorgonia
$T$. Sea fan	$V$. Physalia
$U$. Sea pen	$VI$. Pennatula

$S$ - Statement: Some species of $Coelenterata$ exhibit polymorphism.
$R$ - Reason: In $Coelenterata$,the medusa form is observed as the asexual stage.

Similar Questions

Match the following columns:
Column-$I$ Column-$II$
$P$. Brain coral $I$. Adamsia
$Q$. Portuguese man-of-war $II$. Meandrina
$R$. Sea anemone $III$. Hydra
$S$. Hydra $IV$. Gorgonia
$T$. Sea fan $V$. Physalia
$U$. Sea pen $VI$. Pennatula

Which of the following animals is without a sexual medusa stage?

The gastrovascular cavity of $Hydra$ provides for

The medusa of $Obelia$ is:

Hydra can use its tentacles for

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$S$ - Statement: Some species of $Coelenterata$ exhibit polymorphism.$R$ - Reason: In $Coelenterata$,the medusa form is observed as the asexual stage.