Identify the incorrect pair from the followin | vedclass

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Question

(D) The correct answer is $D$. $1$. $Cnidaria$ (Coelenterata) are the first animals to exhibit a primitive nervous system in the form of a nerve net.

Vedclass · Accepted Answer

First phylum to possess a coelom - $Mollusca$

Vedclass · Answer

(D) The correct answer is $D$. $1$. $Cnidaria$ (Coelenterata) are the first animals to exhibit a primitive nervous system in the form of a nerve net. $2$. $Aschelminthes$ (Nematoda) are the first to possess a complete alimentary canal with a mouth and anus. $3$. $Annelida$ are the first to possess a closed circulatory system. $4$. $Mollusca$ is not the first phylum to possess a coelom; $Annelida$ is the first phylum to exhibit a true coelom (eucoelomate). Therefore,the pair '$Mollusca$' is incorrect.

Column-$I$	Column-$II$
$(a)$ Two-chambered	$(i)$ Peacock
$(b)$ Three-chambered	$(ii)$ Labeo
$(c)$ Incomplete four-chambered	$(iii)$ Ichthyophis
$(d)$ Four-chambered	$(iv)$ Lizard

Identify the incorrect pair from the following:

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Match the following columns regarding the number of heart chambers in different animals:

Column-$I$ Column-$II$

$(a)$ Two-chambered $(i)$ Peacock

$(b)$ Three-chambered $(ii)$ Labeo

$(c)$ Incomplete four-chambered $(iii)$ Ichthyophis

$(d)$ Four-chambered $(iv)$ Lizard

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