Select the correct option for Non-chordates:( | vedclass

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(D) Non-chordates are characterized by the following features:$1$. The central nervous system is ventral,solid,and double.$2$. Pharyngeal gill slits a

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$I, II$ and $IV$

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(D) Non-chordates are characterized by the following features:$1$. The central nervous system is ventral,solid,and double.$2$. Pharyngeal gill slits are absent.$3$. The heart,if present,is dorsal.$4$. Post-anal tail is absent.Comparing these with the given statements:$(I)$ Correct: Non-chordates have a ventral,solid,and double nerve cord.$(II)$ Correct: Gill slits are absent in non-chordates.$(III)$ Incorrect: In non-chordates,the heart is dorsal (if present),whereas it is ventral in chordates.$(IV)$ Correct: Post-anal tail is absent in non-chordates.Therefore,statements $(I), (II),$ and $(IV)$ are correct.

Select the correct option for Non-chordates:
$(I)$ Central nervous system is ventral,solid,and double
$(II)$ Gill slits are absent
$(III)$ Heart is ventral
$(IV)$ Post-anal tail is absent

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Select the correct option for Non-chordates:$(I)$ Central nervous system is ventral,solid,and double$(II)$ Gill slits are absent$(III)$ Heart is ventral$(IV)$ Post-anal tail is absent