MCQ
What is common among silverfish, scorpion, crab and honey bee?
- AMetamorphosis.
- BPoison glands.
- CBoth.
- DNone of these.
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$A$. 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: