I: | Heart is dorsal |
II: | Central nervous system is ventral |
III: | A post-anal tail is present |
Column I | Column II | ||
A | Cephalochordata | P | Swim bladder |
B | Cyclostomata | Q | Notochord – head to tail |
C | Chondrichthyes | R | Males bear claspers on pelvic fins |
D | Osteichthyes | S | Marine but migrate to freshwater for spawning |
A | B | C | D | |
1. | S | Q | P | R |
2. | P | Q | R | S |
3. | Q | S | R | P |
4. | R | P | S | Q |
1. | Penguin: Aptenodytes | 2. | Tortoise: Testudo |
3. | Platypus: Macropus | 4. | Angel fish: Pterophyllum |
Assertion (A): | Hemichordates are not chordates. |
Reason (R): | They do not have a notochord. |
1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
3. | (A) is True but (R) is False. |
4. | Both (A) and (R) are False. |
Column I | Column II | ||
A. | Comb plates | P. | Cnidaria |
B. | Metagenesis | Q. | Mollusca |
C. | Canal system | R. | Sponges |
D. | Radula | S. | Ctenophora |
A | B | C | D | |
1. | S | P | R | Q |
2. | P | S | R | Q |
3. | P | S | Q | R |
4. | S | P | Q | R |
What is the number of animals, amongst the animals given below, that have both a four-chambered heart and endothermy?
Crocodilus, Aptendytes, Canis, Calotes, Struthio, Delphinus, Testudo, Ichthyophis
1. | 3 | 2. | 4 |
3. | 5 | 4. | 6 |
COLUMN I | COLUMN II | ||
A. | Petromyzon | P | A jawless vertebrate |
B. | Icthyophis | Q | A limbless amphibian |
C. | Struthio | R | A flightless bird |
A | B | C | |
1. | Q | R | P |
2. | Q | P | R |
3. | P | Q | R |
4. | P | R | Q |
1. | Obelia | Metagenesis |
2. | Planaria | Free living with high regeneration capacity |
3. | Ancylostoma | Acoelomate |
4. | Nereis | Parapodia |
Column I | Column II | ||
A. | Porifera | P | Metagenesis |
B. | Cnidaria | Q | Flame cells |
C. | Ctenophora | R | Comb Plates |
D. | Platyhelminthes | S | Choanocyte |
A | B | C | D | |
1. | R | Q | S | P |
2. | S | P | R | Q |
3. | P | S | Q | R |
4. | Q | R | P | S |