Question

Which of the following statement is correct?
(I). In Urochordates like Ascidia, Salpa, Doliolum notochord is present in only larval tail.
(II). In cephalochordates like Branchiostoma (Amphioxus or Lancelet) notochord extends from head to tail and is persistent throughout the life
(III). All vertebrates are chordates but all chordates are not vertebrates
(IV). Notochord is replaced by vertebral column

• A. All are correct
• B. Only $II$ and $IV$ are correct
• C. All are wrong
• D. Only $II$ is

Answer 1

Answer: (A)

Correct answer is (a) All are correct