Body is eel like in___________?
(A) Cyclostomata
(B) Chondrichthyes
(C) Osteichthyes
(D) None of these
Notochord is present throughout life in___________?
(A) Urochordates
(B) Cephalochordates
(C) Chordates
(D) Vertebrates
Mammals became dominant in__________?
(A) Proterozoic era
(B) Mesozoic era
(C) Paleozoic era
(D) Cenozoic era
Which of the following are motile zooids in cnidarians?
(A) Polyps
(B) Medusae
(C) Both of these
(D) None of these
Nervous system of nematods consists of?
(A) Ventral nerve cord
(B) Dorsal nerve cord
(C) Lateral nerve cord
(D) All of these
All of the following are true for Platyhelminthes except____________?
(A) Flatwarms
(B) Triploblastic
(C) Coelomate
(D) Bilateral symmetry
Exoskeoeton of coelenterates terates is made up to__________?
(A) Calcium
(B) Silica
(C) Chitin
(D) Both A & B
Pseudocoelem develops from____________?
(A) Blastopore
(B) Plastoquinone
(C) Blastocoel
(D) Splitting of mesoderm