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Q. No.Identify the correct statements:
Statement I:
Frog eye does not have closable eye lids.
Statement II:
A nictitating membrane provides protection to the eye, especially when the frog is swimming.
1.
Statement I is correct; Statement II is incorrect
2.
Statement I is incorrect; Statement II is incorrect
3.
Statement I is correct; Statement II is correct
4.
Statement I is incorrect; Statement II is correct
Subtopic: Â Frogs: Morphology |
Level 3: 35%-60%
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Frogs can hear both in the air and below water.
I: They do not have external ears
II: The eardrums (tympanic membranes) are visible as a circular area just behind the eye.
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
I: They do not have external ears
II: The eardrums (tympanic membranes) are visible as a circular area just behind the eye.
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Â Frogs |
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Level 1: 80%+
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The call or croak of a frog is unique to its species. The main function of calling is:
1. for male frogs to ward off other males from their territory
2. for male frogs to attract mates.
3. for female frogs to send distress signals.
4. for female frogs to search for its progeny.
1. for male frogs to ward off other males from their territory
2. for male frogs to attract mates.
3. for female frogs to send distress signals.
4. for female frogs to search for its progeny.
Subtopic: Â Frogs |
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Level 1: 80%+
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The larvae that emerge from the eggs, known as tadpoles:
1. Only I, II and III are correct
2. Only I, III and IV are correct
3. Only II, III and IV are correct
4. I, II, III and IV are correct
| I: | lack eyelids and limbs |
| II: | have cartilaginous skeletons |
| III: | use gills for respiration |
| IV: | have tails |
2. Only I, III and IV are correct
3. Only II, III and IV are correct
4. I, II, III and IV are correct
Subtopic: Â Frogs: Anatomy (Female Reproductive System) |
 55%
Level 3: 35%-60%
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Metamorphosis in frogs typically lasts only 24 hours, and is initiated by production of the hormone:
| 1. | thyroxine | 2. | cortisol |
| 3. | thymsin | 4. | FSH and LH |
Subtopic: Â Frogs: Anatomy (Female Reproductive System) |
 80%
Level 1: 80%+
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Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R):
In the light of the above statements, choose the correct answer from the options given below:
| Assertion (A): | Frogs are at their most vulnerable to predators when they are undergoing metamorphosis. |
| Reason (R): | At this time, the tail is being lost and locomotion by means of limbs is only just becoming established. |
In the light of the above statements, choose the correct answer from the options given below:
| 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: Â Frogs |Â Frogs: Morphology |
 72%
Level 2: 60%+
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Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R):
In the light of the above statements choose the correct answer from the options given below:
| Assertion (A): | A sample of urine from a pregnant woman injected into a female frog induces it to lay eggs. |
| Reason (R): | A hormone, human chorionic gonadotropin, is present in substantial quantities in the urine of women during pregnancy. |
In the light of the above statements choose the correct answer from the options given below:
| 1. | (A) is true but (R) is false. |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | Both (A) and (R) are true and (R) is the correct explanation of (A) |
| 4. | (A) is false but (R) is true. |
Subtopic: Â Frogs |
 65%
Level 2: 60%+
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In frogs:
I: Muscular coordination and posture are controlled by the cerebellum.
II: Medulla oblongata regulates respiration, digestion and other automatic functions.
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
I: Muscular coordination and posture are controlled by the cerebellum.
II: Medulla oblongata regulates respiration, digestion and other automatic functions.
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Â Frogs: Anatomy (Nervous System) |
 91%
Level 1: 80%+
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Consider the two statements:
1. Statement I is correct; Statement II is incorrect
2. Statement I is incorrect; Statement II is incorrect
3. Statement I is correct; Statement II is correct
4. Statement I is incorrect; Statement II is correct
| Statement I: | Although adapted to terrestrial life, frogs resemble freshwater fish in their inability to conserve body water effectively. |
| Statement II: | Frogs produce large quantities of dilute urine in order to flush out toxic products from the kidney tubules. |
1. Statement I is correct; Statement II is incorrect
2. Statement I is incorrect; Statement II is incorrect
3. Statement I is correct; Statement II is correct
4. Statement I is incorrect; Statement II is correct
Subtopic: Â Frogs: Anatomy (Respiratory System) |Â Frogs: Anatomy (Excretory System) |
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Consider the two statements:
Statement I: Frogs have maxillary teeth along their upper jaw which are used to hold food before it is swallowed.
Statement II: The tongue normally lies coiled in the mouth, free at the back and attached to the mandible at the front.
1. Statement I is correct; Statement II is incorrect
2. Statement I is incorrect; Statement II is incorrect
3. Statement I is correct; Statement II is correct
4. Statement I is incorrect; Statement II is correct
Statement I: Frogs have maxillary teeth along their upper jaw which are used to hold food before it is swallowed.
Statement II: The tongue normally lies coiled in the mouth, free at the back and attached to the mandible at the front.
1. Statement I is correct; Statement II is incorrect
2. Statement I is incorrect; Statement II is incorrect
3. Statement I is correct; Statement II is correct
4. Statement I is incorrect; Statement II is correct
Subtopic: Â Frogs: Morphology |
 64%
Level 2: 60%+
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