Q. No.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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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%
From NCERT
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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) |
50%
From NCERT
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The frog has:
| 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 (Circulatory System) |
89%
From NCERT
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In frogs:
| 1. | the heart is two chambered |
| 2. | lymphatic system is absent |
| 3. | sinus venosus joins the right atrium |
| 4. | RBCs are not nucleated and do not contain haemoglobin |
Subtopic: Frogs: Anatomy (Circulatory System) |
84%
From NCERT
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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: Frogs: Anatomy (Circulatory System) |
88%
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Consider the given two statements:
| Statement I: | Frogs do not have a lymphatic system. |
| Statement II: | Frogs do not have a portal system. |
| 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: Frogs: Anatomy (Circulatory System) |
84%
From NCERT
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Regarding frog:
I: They do not have a lymphatic system.
II: They have a very long alimentary canal.
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 a lymphatic system.
II: They have a very long alimentary canal.
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 (Circulatory System) |
77%
From NCERT
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