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Q. No.Being cold-blooded, frogs have to adopt suitable behaviour patterns to regulate their temperature.
Which of the following will be true?
I:
To warm up, they can move into the sun or onto a warm surface; if they overheat, they can move into the shade.
II:
In cool damp conditions, the colour of the skin will be lighter than on a hot dry day.
1.
Statement I is correct; Statement II is incorrect
2.
Statement I is correct; Statement II is correct
3.
Statement I is incorrect; Statement II is incorrect
4.
Statement I is incorrect; Statement II is correct
Subtopic: Â Frogs: Morphology |
Level 3: 35%-60%
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Frogs that live in or visit water have adaptations that improve their swimming abilities. Which of the following will be true in this regard?
| I: | The hind limbs are heavily muscled and strong. |
| II: | The webbing between the toes of the hind feet increases the area of the foot and helps propel the frog powerfully through the water. |
| 1. | Only I | 2. | Only II |
| 3. | Both I and II | 4. | Neither I nor II |
Subtopic: Â Frogs: Morphology |
 80%
Level 1: 80%+
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Consider the given statements regarding the skin of frog:
Statement I: It is protective, has a respiratory function, can absorb water, and helps control body temperature.
Statement II: It lacks glands except an oil gland at the very caudal end of its body.
1. Statement I is correct; Statement II is incorrect
2. Statement I is correct; Statement II is correct
3. Statement I is incorrect; Statement II is incorrect
4. Statement I is incorrect; Statement II is correct
Statement I: It is protective, has a respiratory function, can absorb water, and helps control body temperature.
Statement II: It lacks glands except an oil gland at the very caudal end of its body.
1. Statement I is correct; Statement II is incorrect
2. Statement I is correct; Statement II is correct
3. Statement I is incorrect; Statement II is incorrect
4. Statement I is incorrect; Statement II is correct
Subtopic: Â Frogs: Anatomy (Respiratory System) |
 63%
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): | Frogs can remain in places without access to the air. |
| Reason (R): | Lungs are filled by buccal pumping. |
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 |
Level 3: 35%-60%
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Frogs have three-chambered hearts. What is correct regarding circulatory pathways in frogs?
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: | Oxygenated blood from the lungs and de-oxygenated blood from the respiring tissues enter the heart through separate atria. |
| II: | When atria contract, the two blood streams pass into a common ventricle. |
| III: | From the ventricle the blood is pumped via a spiral valve to the appropriate vessel, the aorta for oxygenated blood and pulmonary artery for deoxygenated blood. |
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 (Circulatory System) |
 84%
Level 1: 80%+
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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 |
 68%
Level 2: 60%+
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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) |
 56%
Level 3: 35%-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) |
 93%
Level 1: 80%+
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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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Please attempt this question first.
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 |
 82%
Level 1: 80%+
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