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Q. No.Subtopic: Frogs: Anatomy (Nervous System) |
89%
Level 1: 80%+
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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%
Level 1: 80%+
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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) |
81%
Level 1: 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%
Level 2: 60%+
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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) |
82%
Level 1: 80%+
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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%
Level 2: 60%+
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Mesorchium in frogs:
| 1. | is a double fold of peritoneum that adheres testes to kidney. |
| 2. | is a double fold of peritoneum that adheres ovaries to kidney. |
| 3. | is the outer cortical part of testes. |
| 4. | is the outer cortical part of ovaries. |
Subtopic: Frogs: Anatomy (Male Reproductive System) |
89%
Level 1: 80%+
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A pair of oviducts arising from the ovaries in female frogs:
| 1. | join to form a single median duct that opens into the cloaca. |
| 2. | opens into the cloaca separately. |
| 3. | opens separately to the exterior through the skin. |
| 4. | join to form a single median duct that opens into Bidder’s canal. |
Subtopic: Frogs: Anatomy (Female Reproductive System) |
73%
Level 2: 60%+
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The number of ova that can be laid by a mature female frog at a time varies between:
| 1. | 100 to 200 | 2. | 750 to 1250 |
| 3. | 2500 to 3000 | 4. | 8000 to 10000 |
Subtopic: Frogs: Anatomy (Female Reproductive System) |
93%
Level 1: 80%+
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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 help maintain ecological balance. |
| Reason (R): | Frogs serve as an important link in the food chain and food web in the ecosystem. |
| 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. | Both (A) and (R) are false. |
Subtopic: How Frogs are Beneficial for Mankind? |
Level 4: Below 35%
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