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Q. No.Frogs respire on land and in water by two different methods:
Statement I:
In water, skin acts as aquatic respiratory organ (cutaneous respiration).
Statement II:
On land, the buccal cavity, skin and lungs act as the respiratory organs.
1.
Statement I is correct, Statement II is correct
2.
Statement I is incorrect, Statement II is correct
3.
Statement I is correct, Statement II is incorrect
4.
Statement I is incorrect, Statement II is incorrect
Subtopic: Frogs: Anatomy (Respiratory System) |
88%
From NCERT
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During aestivation and hibernation, gaseous exchange in frogs takes place:
1. across alveoli in the lungs.
2. through the moist buccal mucosa.
3. in gills.
4. through skin.
1. across alveoli in the lungs.
2. through the moist buccal mucosa.
3. in gills.
4. through skin.
Subtopic: Frogs: Anatomy (Respiratory System) |
94%
From NCERT
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The single ventricle in the heart of a frog:
| 1. | opens into a sac-like conus arteriosus on the dorsal side of the heart. |
| 2. | opens into a sac-like conus arteriosus on the ventral side of the heart. |
| 3. | opens into a dilated chamber sinus venosus on the ventral side of the heart. |
| 4. | opens into a dilated chamber sinus venosus on the dorsal side of the heart. |
Subtopic: Frogs: Anatomy (Circulatory System) |
74%
From NCERT
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Unlike humans, frogs have a:
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: | Hepatic portal system |
| II: | Renal portal system |
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: Frogs: Anatomy (Digestive System) | Frogs: Anatomy (Excretory System) |
From NCERT
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Sinus venosus in the heart of a frog:
| I: | joins the left atrium |
| II: | pumps blood into the major arteries |
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: Frogs: Anatomy (Circulatory System) |
54%
From NCERT
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Consider the two statements:
| Statement I: | The vascular system of frog is well-developed and closed type. |
| Statement II: | Frogs do not have a lymphatic system. |
| 1. | Statement I is correct, Statement II is correct |
| 2. | Statement I is incorrect, Statement II is correct |
| 3. | Statement I is correct, Statement II is incorrect |
| 4. | Statement I is incorrect, Statement II is incorrect |
Subtopic: Frogs: Anatomy (Circulatory System) |
85%
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Heart of a frog:
| I: | has three chambers |
| II: | is a muscular pump |
| III: | is covered by pericardium |
1. Only I and II are correct
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
Subtopic: Frogs: Anatomy (Circulatory System) |
90%
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Unlike RBCs in humans, the RBCs of frog:
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: | are nucleated |
| II: | contain haemoglobin |
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: Frogs: Anatomy (Circulatory System) |
50%
From NCERT
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Subtopic: Frogs: Anatomy (Excretory System) |
81%
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The excretory system of a frog consists of all of the following, except:
| 1. | a pair of kidneys | 2. | a pair of urethra |
| 3. | a single median cloaca | 4. | urinary bladder |
Subtopic: Frogs: Anatomy (Excretory System) |
78%
From NCERT
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