Which one of the following features are true | vedclass

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(C) The fundamental characteristics of phylum Chordata include:$1$. Presence of a notochord $(e)$.$2$. $A$ dorsal,hollow,and single central nervous sy

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$(a), (b), (d)$ and $(e)$ only

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(C) The fundamental characteristics of phylum Chordata include:$1$. Presence of a notochord $(e)$.$2$. $A$ dorsal,hollow,and single central nervous system $(c$ is incorrect because the $CNS$ in chordates is dorsal,not ventral).$3$. Paired pharyngeal gill slits $(b)$.$4$. $A$ ventral heart $(a)$.$5$. $A$ post-anal tail $(d)$.Therefore,the features $(a), (b), (d),$ and $(e)$ are correct for chordates. Option $(c)$ is incorrect because the central nervous system in chordates is dorsal,whereas it is ventral in non-chordates.

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Which one of the following features are true for chordates?$(a)$ Heart is ventral.$(b)$ Pharyngeal gill slits present.$(c)$ Central nervous system is ventral,solid and single.$(d)$ Post-anal tail is present.$(e)$ Notochord is present.Choose the most appropriate answer from the options given below: