A) Bilateral symmetry
B) Axiate organization
C) Pharyngeal gill slits
D) Metamerism
Correct Answer: C
Solution :
In all the chordates, a series of pharyngeal gill slits are found at some stage of their life-history. These are found in the pharyngeal wall of the gut behind the mouth. These are absent in invertebrates.You need to login to perform this action.
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