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Q. No.Frogs exhibit sexual dimorphism. Male frogs can be distinguished from the females by the presence of:
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.
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: Anatomy (Male Reproductive System) | Frogs: Anatomy (Female Reproductive System) |
65%
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): | 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%
From NCERT
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Identify the correct chronological sequence of the appearance of structures in the alimentary canal of frog beginning from the 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) |
81%
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. |
Subtopic: Frogs: Anatomy (Digestive System) |
94%
From NCERT
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Regarding feeding in frog:
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: | Frog is a herbivore |
| II: | Food is captured by the bilobed tongue. |
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 |
91%
From NCERT
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The action of HCl and gastric juices secreted from the walls of the stomach leads to formation of a partially digested food in frog called as:
| 1. | chyme | 2. | chyle |
| 3. | succus entericus | 4. | bile |
Subtopic: Frogs: Anatomy (Digestive System) |
95%
From NCERT
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Which part of the alimentary canal in frog receives bile from gall bladder and pancreatic juices from the pancreas through a common bile duct?
| 1. | Stomach | 2. | Duodenum |
| 3. | Oesophagus | 4. | Pharynx |
Subtopic: Frogs: Anatomy (Digestive System) |
91%
From NCERT
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Identify whether the given statements are true [T] or false [F] regarding frog:
| I: | Bile emulsifies fat. |
| II: | Pancreatic juices digest carbohydrates and proteins. |
| III: | Digested food is absorbed by the numerous finger-like folds in the inner wall of intestine called villi and microvilli. |
| IV: | The undigested solid waste moves into the rectum and passes out through cloaca. |
| I | II | III | IV | |
| 1. | T | T | F | T |
| 2. | F | T | T | F |
| 3. | T | T | T | T |
| 4. | T | F | F | T |
Subtopic: Frogs: Anatomy (Digestive System) |
93%
From NCERT
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Frogs respire on land and in water by two different methods:
| Statement I: | In water, skin acts as aquatic respiratory organ (cutaneous respiration). |
| Statement II: | On land, the buccal cavity, skin and lungs act as the respiratory organs. |
| 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: Anatomy (Respiratory System) |
88%
From NCERT
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During aestivation and hibernation, gaseous exchange in frogs takes place:
1. across alveoli in the lungs.
2. through the moist buccal mucosa.
3. in gills.
4. through skin.
1. across alveoli in the lungs.
2. through the moist buccal mucosa.
3. in gills.
4. through skin.
Subtopic: Frogs: Anatomy (Respiratory System) |
95%
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