Column I [Phylum] |
Column II [Characteristic] |
||
A. | Porifera | P. | Water vascular system |
B. | Aschelminthes | Q. | Canal system |
C. | Echinodermata | R. | Pseudocoelom |
D. | Hemichordata | S. | Stomochord |
A | B | C | D | |
1. | Q | R | P | S |
2. | S | R | Q | P |
3. | Q | S | R | P |
4. | R | S | P | Q |
1. | Ascidia | 2. | Doliolum |
3. | Brannchiostoma | 4. | Petromyzon |
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
1. | marine bony fish |
2. | fresh water bony fish |
3. | cartilaginous fish |
4. | cyclostome |