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Q. No.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) |
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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%
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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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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%
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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%
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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%
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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. | (A) is True but (R) is False. |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 4. | (A) is False but (R) is True. |
Subtopic: How Frogs are Beneficial for Mankind? |
89%
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In the given diagrammatic representation of internal organs of a frog showing complete digestive system, identify V, VI, VII, VIII:
| V | VI | VII | VIII | |
| 1. | Uterus | Urinary bladder | Rectum | Cloaca |
| 2. | Ureter | Urinary bladder | Rectum | Cloaca |
| 3. | Ureter | Urinary bladder | Cloaca | Rectum |
| 4. | Urethra | Urinary bladder | Cloaca | Rectum |
Subtopic: Frogs: Anatomy (Digestive System) |
73%
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The figure shows the male reproductive system of a frog. Identify A, B, C, and D:
| A | B | C | D | |
| 1. | Testis | Vas deferens | Fat bodies | Pituitary gland |
| 2. | Fat bodies | Vasa efferentia | Testis | Adrenal gland |
| 3. | Testis | Vas deferens | Fat bodies | Adrenal gland |
| 4. | Testis | Vasa efferentia | Fat bodies | Adrenal gland |
Subtopic: Frogs: Anatomy (Male Reproductive System) |
76%
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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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