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Q. No.Many parts of frog brains correspond with those of humans. Which structure of human brain has no corresponding structure in frogs?
| 1. | Olfactory lobe | 2. | Optic lobe |
| 3. | Pons | 4. | Cerebellum |
Subtopic: Â Frogs: Anatomy (Nervous System) |
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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 |
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Subtopic: Â Frogs: Anatomy (Digestive System) |
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The larvae that emerge from the eggs, known as tadpoles:
I: lack eyelids and limbs
II: have cartilaginous skeletons
III: use gills for respiration
IV: have tails
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
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
Subtopic: Â Frogs: Anatomy (Female Reproductive System) |
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Identify the correct 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: | Frog eye does not have closable eye lids. |
| Statement II: | A nictitating membrane provides protection to the eye, especially when the frog is swimming. |
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 |
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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) |
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Twelve pairs of cranial nerves are present in all the following except:
| 1. | Mammals | 2. | Birds |
| 3. | Reptiles | 4. | Amphibians |
Subtopic: Â Frogs: Anatomy (Nervous System) |
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Being cold-blooded, frogs have to adopt suitable behaviour patterns to regulate their temperature.
Which of the following will be true?
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
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. |
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 |
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Subtopic: Â Frogs: Morphology |
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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. |
| 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 |
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Q. No.
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