Column I | Column II | ||
A | Radula | P | Osteichthyes |
B | Operculum | Q | Molluska |
C | Flame cell | R | Flat worms |
D | Hair | S | Mammalia |
A | B | C | D | |
1. | P | S | Q | R |
2. | Q | P | R | S |
3. | Q | R | P | S |
4. | R | Q | S | P |
1. | capturing prey in Cnidarians |
2. | generating water current in sponges |
3. | osmoregulation in rotifers |
4. | movement in ctenophores |
Notochord is a:
1. | endodermally derived rod-like structure formed on the dorsal side during embryonic development in some animals. |
2. | endodermally derived rod-like structure formed on the ventral side during embryonic development in some animals. |
3. | mesodermally derived rod-like structure formed on the dorsal side during embryonic development in some animals. |
4. | mesodermally derived rod-like structure formed on the ventral side during embryonic development in some animals. |
What would not be true for cyclostomes?
1. | All are endoparasites on some fishes. |
2. | They have aa circular mouth without jaw. |
3. | Body is devoid of scales and paired fins. |
4. | Circulation is of closed type. |
Homoiothermy and a four chambered muscular heart is seen in:
I: Mammals
II: Crocodiles
III: Birds
1. Only I and II
2. Only I and III
3. Only II and III
4. I, II and III
Unlike roundworms, flatworms:
1. are triploblastic
2. exhibit bilateral symmetry
3. do not have a coelom
4. reproduce only by sexual methods