A typical reptilian heart is shown by the figure:
1. | 2. | ||
3. | 4. |
The diagram below shows the body plan of a:
The larvae in echinoderms are:
I: | Radially symmetrical | II: | Free swimming |
1. | Only I | 2. | Only II |
3. | Both I and II | 4. | Neither I nor II |
I: | They have a cellular level of organisation |
II: | Digestion is intracellular |
III: | Fertilization is external and development is direct |
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. |
1. | Cyclostomata | 2. | Chondrichthyes |
3. | Amphibia | 4. | Reptilia |