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Q. No.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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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%
From NCERT
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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%
From NCERT
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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%
From NCERT
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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%
From NCERT
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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%
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%
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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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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The forebrain of frog does not include:
| 1. | olfactory lobes | 2. | cerebral hemispheres |
| 3. | diencephalon | 4. | cerebellum |
Subtopic: Frogs: Anatomy (Nervous System) |
80%
From NCERT
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