Which one is the most striking or (common) character of the vertebrates?
(a) Presence of notochord
(b) Presence of triploblastic condition
(c) Presence of gill pouches
(d) Presence of coelom
Answer- (a)
Solution- Kingdom Animalia are divided into chordates and non-chordates on the basis of presence or absence of notochord. The presence of triploblastic condition, presence of gill pouches and coelom is found in both vertebrates and invertebrates but Notochord is present only in invertebrates.
The correct answer is – a) Presence of notochord