Consider the following statements (A-D) each with one or two blanks.
(A) Four characters of chordates are the presence of `overset("(i)")"_____"` dorsal hollow nervous system, `overset("(ii)")"_____"` and muscular tail
(B) Agnatha are the most primitive craniates. They are commonly called `overset("(iii)")"_____"` vertebrates
(C) Electric ray belongs to class `overset("(iv)")"_____"` while sea horse belongs to class `overset("(v)")"_____"`
(D) `overset("(vi)")"_____"` are also defined as feathered bipeds. These have a `overset("(vii)")"_____"` gland on the tail
Which one of the following options, correctly fills any two of the given statements ?

Options

A. (iii)-jawless, (iv)-Osteichthyes, (v)-Chondrichthyes
B. (i)-notochord, (ii)-pharyngeal gill slits, (iv)-Chondrichthyes, (v)-Osteichthyes
C. (iii)-jawed, (vi)-Reptiles, (vii)-uropygial
D. (i)-four-chambered heart, (ii)-pharyngeal gill slits, (vi)-Birds, (vii)-uropygial

Answer

B