MCQ
Animals are
- ✓Heterotrophic
- BAutotrophic
- CBoth $(a)$ and $(b)$
- DNone of these
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$R -$ Cross bridge is formed only in presence of $ATP,$ while breaking of cross bridge is in absence of $ATP.$
$A$. Pharynx is perforated by gill slits.
$B$. Notochord is absent.
$C$. Central nervous system is dorsal.
$D$. Heart is dorsal if present.
$E$. Post anal tail is absent.
Choose the most appropriate answer from the options given below: