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Q. No.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.
Subtopic: Frogs: Anatomy (Respiratory System) |
95%
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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) |
75%
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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) |
86%
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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%
From NCERT
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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) |
51%
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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How many of the given statements regarding the anatomy of frogs are correct?
| A: | Kidneys are situated a little posteriorly in the body cavity on both sides of the vertebral column. |
| B: | Each kidney is composed of several structural and functional units called uriniferous tubules or nephrons. |
| C: | Two ureters emerge from the kidneys in male frogs, where the ureters act as urinogenital ducts that open into the cloaca. |
| D: | In females, the ureters and oviduct open separately in the cloaca. |
| 1. | 1 | 2. | 2 |
| 3. | 3 | 4. | 4 |
Subtopic: Frogs: Anatomy (Excretory System) |
80%
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