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Q. No.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
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Frogs: Anatomy (Circulatory System) |
53%
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) |
89%
From NCERT
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Subtopic: Frogs: Anatomy (Excretory System) |
82%
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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) |
79%
From NCERT
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Subtopic: Frogs: Anatomy (Nervous System) |
89%
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Unlike human brain, which of the following structure is not a feature of a frog’s brain?
| 1. | Cerebellum | 2. | Pons varolii |
| 3. | Medulla oblongata | 4. | Olfactory lobes |
Subtopic: Frogs: Anatomy (Nervous System) |
82%
From NCERT
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The forebrain of frog does not include:
| 1. | olfactory lobes | 2. | cerebral hemispheres |
| 3. | diencephalon | 4. | cerebellum |
Subtopic: Frogs: Anatomy (Nervous System) |
80%
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Which of the following sense organs in frogs are well-organised structures rather than cellular aggregations around nerve endings?
| I: | Sensory papillae for touch |
| II: | Taste buds |
| III: | Nasal epithelium |
| IV: | Eyes |
| V: | Tympanum with internal ears |
| 1. | Only I, II and III | 2. | Only IV and V |
| 3. | Only II, IV and V | 4. | Only IV |
Subtopic: Frogs: Anatomy (Nervous System) |
73%
From NCERT
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Regarding ear in frog:
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
| I: | External ear is absent. |
| II: | Only tympanum can be seen externally. |
| III: | The ear is an organ of hearing but not of balancing (equilibrium). |
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 (Nervous System) |
81%
From NCERT
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Trace the correct path of passage of the sperm in male Rana tigrina:
| 1. | Testes → Vasa efferentia → Kidney → Seminal vesicle → Urogenital duct → Cloaca |
| 2. | Testes → Vasa efferentia → Bidder’s canal → Ureter → Cloaca |
| 3. | Testes → Vasa efferentia → Kidney → Bidder’s canal → Urogenital duct → Cloaca |
| 4. | Testes → Bidder’s canal → Kidney → Vasa efferentia → Urogenital duct → Cloaca |
Subtopic: Frogs: Anatomy (Male Reproductive System) |
77%
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