A: Hydra has a nerve net but no brain.R: All | vedclass

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(A) Assertion is true: In $Hydra$,nerve cells are present which join to form a nerve net,but these nerve cells are not organized to form a brain.Reaso

Vedclass · Accepted Answer

Assertion and Reason both are correct and Reason is the correct explanation of Assertion.

Vedclass · Answer

(A) Assertion is true: In $Hydra$,nerve cells are present which join to form a nerve net,but these nerve cells are not organized to form a brain.Reason is also true: The neurons in $Hydra$ are apolar (lacking distinct axons and dendrites). These apolar neurons connect with each other to form a diffuse nerve net.Therefore,both Assertion and Reason are correct,and the Reason is the correct explanation for the Assertion.

$A$: $Hydra$ has a nerve net but no brain.
$R$: All its neurons are apolar and connected.

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$A$: $Hydra$ has a nerve net but no brain.$R$: All its neurons are apolar and connected.