Which of the following statements is false?
a. All vertebrates have a ventral nerve cord.
b. All vertebrates have a tail at some stage in their life cycle.
c. All vertebrates have a notochord at some stage in their life cycle.
d. All vertebrates have pharyngeal gill slits at some stage in their life cycle.
e. All vertebrates have a tubular nerve cord.
Ans: All vertebrates have a ventral nerve cord.
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