Which one of the following is a matching pair | vedclass

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Question

(A) The correct matching pair is $A$. $1$. Leech (Annelida) possesses a ventral central nervous system consisting of a nerve ring and a ventral nerve

Vedclass · Accepted Answer

Ventral central nervous system $\Rightarrow$ Leech

Vedclass · Answer

(A) The correct matching pair is $A$. $1$. Leech (Annelida) possesses a ventral central nervous system consisting of a nerve ring and a ventral nerve cord with ganglia. $2$. Pharyngeal gill slits are present in the embryos of all chordates,including Chamaeleon (Reptilia). $3$. Scorpion (Arthropoda) has a dorsal heart,not a ventral one. $4$. $A$ post-anal tail is a characteristic feature of chordates; Octopus (Mollusca) is a non-chordate and lacks this feature.

Characteristic	Cyclostomata	Chondrichthyes	Osteichthyes
$(i)$ Habitat	Marine	Marine	Marine, Fresh Water
$(ii)$ Mouth	Sucking mouth	Ventral mouth	Terminal mouth
$(iii)$ Gill Slits	$6-15$ Pairs	$5-7$ Pairs	$4$ Pairs
$(iv)$ Scales	Absent	Placoid	Cycloid/Ctenoid
$(v)$ Fins	Unpaired	Paired	Paired

Which one of the following is a matching pair of a body feature and the animal possessing it?

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