Which character is not the same in Aves and M | vedclass

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Question

(C) The correct answer is $C$. $Aves$ (birds) possess a variable number of cervical vertebrae,typically ranging from $8$ to $25$,depending on the spec

Vedclass · Accepted Answer

Seven cervical vertebrae

Vedclass · Answer

(C) The correct answer is $C$. $Aves$ (birds) possess a variable number of cervical vertebrae,typically ranging from $8$ to $25$,depending on the species. In contrast,almost all mammals possess exactly $7$ cervical vertebrae,regardless of the length of their neck. Both $Aves$ and $Mammals$ are homoiotherms (warm-blooded),possess metanephric kidneys,and have a single systemic arch (though birds have a right systemic arch and mammals have a left systemic arch,the presence of a single arch is a shared characteristic compared to other vertebrates).

$(a)$ Operculum	$(i)$ Ctenophora
$(b)$ Parapodia	$(ii)$ Mollusca
$(c)$ Scales	$(iii)$ Porifera
$(d)$ Comb plates	$(iv)$ Reptilia
$(e)$ Radula	$(v)$ Annelida
$(f)$ Hairs	$(vi)$ Cyclostomata and Chondrichthyes
$(g)$ Choanocytes	$(vii)$ Mammalia
$(h)$ Gill slits	$(viii)$ Osteichthyes

Which character is not the same in $Aves$ and $Mammals$?

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