- 1(current)
Q. No.Frog’s heart when taken out of the body continues to beat for some time.
Select the best option from the following statements.
| 1. | Frog is a poikilotherm. |
| 2. | Frog does not have any coronary circulation. |
| 3. | Heart is "myogenic" in nature |
| 4. | Heart is autoexcitable |
| 1. | Only (d) |
| 2. | (a) and (b) |
| 3. | (c) and (d) |
| 4. | Only (c) |
Subtopic: Frogs |
67%
Level 2: 60%+
NEET - 2017
Hints
Assertion (A): Frogs are considered important for mankind.
Reason (R): They eat insects and protect the crops.
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. (A) is false, but (R) is true.
Reason (R): They eat insects and protect the crops.
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. (A) is false, but (R) is true.
Subtopic: Frogs |
94%
Level 1: 80%+
Hints
| Assertion (A): | Frogs help maintain ecological balance. |
| Reason (R): | The species which maintain ecological balance serve as an important link in the food chain and food web. |
| 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. | (A) is False but (R) is True. |
Subtopic: Frogs |
85%
Level 1: 80%+
Hints
Assertion (A): Frogs have a short alimentary canal.
Reason (R): They are carnivores.
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. (A) is false, but (R) is true.
Reason (R): They are carnivores.
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. (A) is false, but (R) is true.
Subtopic: Frogs |
88%
Level 1: 80%+
Hints
Assertion (A): The alimentary canal of a frog is short.
Reason (R): Frog is carnivorous.
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.
Reason (R): Frog is carnivorous.
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.
Subtopic: Frogs |
95%
Level 1: 80%+
Hints
| Assertion (A): | The digits for forelimbs of a frog possess a web. |
| Reason (R): | The webs found in the digits of forelimbs help in swimming. |
| 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. |
Subtopic: Frogs |
Level 3: 35%-60%
Hints
| Assertion (A): | The characteristic feature of the intestine of earthworm is the presence of internal median fold of dorsal wall called typhlosole. |
| Reason (R): | Typhlosoles are also found in the frog's intestine. |
| 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. |
Subtopic: Frogs |
59%
Level 3: 35%-60%
Hints
- 1(current)
Q. No.
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