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Q. No.Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R):
Assertion (A):
Rana tigrina is cold-blooded or poikilotherm.
Reason (R):
Its body temperature varies with the temperature of the environment.
In the light of the above statements choose the correct answer from the options given below:
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: Frogs: Morphology |
88%
From NCERT
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In Rana tigrina:
| Statement I: | The colour of dorsal side of body is generally olive green with dark irregular spots. |
| Statement II: | On the ventral side, the skin is uniformly pale yellow. |
| 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: Morphology |
94%
From NCERT
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The frog:
| 1. | drinks a lot of water and passes a lot of dilute urine. |
| 2. | drinks only some water and meets its requirements from metabolic water. |
| 3. | drinks only some water and passes a highly concentrated urine |
| 4. | never drinks water but absorbs it through the skin. |
Subtopic: Frogs: Morphology |
93%
From NCERT
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In Rana tigrina:
I: Body is divisible into head and trunk.
II: A neck and tail are absent.
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: Body is divisible into head and trunk.
II: A neck and tail are absent.
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: Morphology |
93%
From NCERT
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Which of the following statements regarding morphology of frog is not true?
| I: | Above the mouth, a pair of nostrils is present. |
| II: | Eyes are bulged and covered by a nictitating membrane that protects them while on land. |
| III: | On either side of eyes, a membranous tympanum (ear) receives sound signals. |
1. Only II
2. Only II and III
3. Only I
4. None, all statements are correct
Subtopic: Frogs: Morphology |
69%
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In Rana tigrina:
a. The hind limbs end in four digits
b. The hind limbs are larger and muscular than fore limbs.
c. The fore limbs end in five digits.
d. Feet have webbed digits that help in swimming.
1. Only a and b are correct
2. Only c and d are correct
3. Only a and c are correct
4. Only b and d are correct
Subtopic: Frogs: Morphology |
91%
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Frogs exhibit sexual dimorphism. Male frogs can be distinguished from the females by the presence of:
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: | sound producing vocal sacs which are absent in female frogs. |
| II: | a copulatory pad on the first digit of the hind limbs which is absent in female frogs. |
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Frogs: Anatomy (Male Reproductive System) | Frogs: Anatomy (Female Reproductive System) |
65%
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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): | The alimentary canal in frogs is short. |
| Reason (R): | Frogs are carnivores. |
| 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: Frogs: Anatomy (Digestive System) |
93%
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Identify the correct chronological sequence of the appearance of structures in the alimentary canal of frog beginning from mouth:
| 1. | Buccal cavity → Pharynx → Oesophagus → Stomach → Intestine → Rectum → Cloaca |
| 2. | Buccal cavity → Oesophagus → Pharynx → Stomach → Intestine → Rectum → Cloaca |
| 3. | Buccal cavity → Pharynx → Oesophagus → Stomach → Intestine → Cloaca → Rectum |
| 4. | Buccal cavity → Oesophagus → Pharynx → Stomach → Intestine → Cloaca → Rectum |
Subtopic: Frogs: Anatomy (Digestive System) |
82%
From NCERT
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Liver in frog:
1. secretes a lot of digestive enzymes.
2. does not have digestive function.
3. secretes bile that is stored in the gall bladder.
4. secretes bile that is not stored as frogs do not have a gall bladder.
1. secretes a lot of digestive enzymes.
2. does not have digestive function.
3. secretes bile that is stored in the gall bladder.
4. secretes bile that is not stored as frogs do not have a gall bladder.
Subtopic: Frogs: Anatomy (Digestive System) |
94%
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