Which of the following is false?
1. Fertilization is external (in water) in frog
2. In frog, development involves larval stage called tadpole
3. Tadpole undergo metamorphosis to form the adult
4. Development in frog is direct
Subtopic: Frogs: Anatomy (Female Reproductive System) |
94%
From NCERT
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Identify A, B and C respectively -
1. Trunk, Tympanum, Web
2. Neck, Brown eye spot, Web
3. Trunk, Tympanum, Hind limb
4. Neck, Tympanum, Hindlimb
1. Trunk, Tympanum, Web
2. Neck, Brown eye spot, Web
3. Trunk, Tympanum, Hind limb
4. Neck, Tympanum, Hindlimb
Subtopic: Frogs: Morphology |
51%
From NCERT
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The skin of frog:
1. Is smooth and slippery due to the presence of mucus
2. In the dorsal side is usually pale yellow
3. In the ventral side is usually olive green with dark irregular spots
4. Is related to all the above statements
1. Is smooth and slippery due to the presence of mucus
2. In the dorsal side is usually pale yellow
3. In the ventral side is usually olive green with dark irregular spots
4. Is related to all the above statements
Subtopic: Frogs: Morphology |
82%
From NCERT
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Eyes of frogs:
1. Are bulged and lacks nictitating membrane
2. Posses nictitating membrane that protects them while in water
3. Provide them with 180° vision
4. Are compound eyes
1. Are bulged and lacks nictitating membrane
2. Posses nictitating membrane that protects them while in water
3. Provide them with 180° vision
4. Are compound eyes
Subtopic: Frogs: Morphology |
89%
From NCERT
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Frogs:
1. Exhibit sexual dimorphism
2. Have hindlimbs and forelimbs which help in walking, leaping and burrowing
3. Have webbed digits that help in swimming
4. Show all of the above features
1. Exhibit sexual dimorphism
2. Have hindlimbs and forelimbs which help in walking, leaping and burrowing
3. Have webbed digits that help in swimming
4. Show all of the above features
Subtopic: Frogs: Morphology |
89%
From NCERT
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Read the following statements for frog and answer accordingly:
A. Duodenum receives bile and pancreatic juice through hepatopancreatic duct
B. Salivary glands are absent in frog, so digestion starts in stomach
1. Both the statements A and B are correct and B is the correct explanation of A
2. Both the statements A and B are correct but B is not the correct explanation of A
3. Statement A is correct but B is incorrect
4. Both the statements A and B are incorrect
A. Duodenum receives bile and pancreatic juice through hepatopancreatic duct
B. Salivary glands are absent in frog, so digestion starts in stomach
1. Both the statements A and B are correct and B is the correct explanation of A
2. Both the statements A and B are correct but B is not the correct explanation of A
3. Statement A is correct but B is incorrect
4. Both the statements A and B are incorrect
Subtopic: Frogs: Anatomy (Digestive System) |
68%
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In frogs:
1. Digestion of food takes place by the action of HCl and gastric juices secreted from the walls of stomach
2. Partially digested food called chyme is passed from stomach to the first part of intestine, the ileum
3. Digested food is absorbed by the numerous finger-like folds in the inner wall of intestine called villi and microvilli
4. Both (1) and (3) are correct
1. Digestion of food takes place by the action of HCl and gastric juices secreted from the walls of stomach
2. Partially digested food called chyme is passed from stomach to the first part of intestine, the ileum
3. Digested food is absorbed by the numerous finger-like folds in the inner wall of intestine called villi and microvilli
4. Both (1) and (3) are correct
Subtopic: Frogs: Anatomy (Digestive System) |
92%
From NCERT
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Which of the following is correct for the digestion in the alimentary canal of frog?
| 1. | Bile neutralises the acidity of chyme and emulsifies fat |
| 2. | Pancreatic juice contains various enzymes for the digestion of fats and carbohydrates |
| 3. | The absorbed food is absorbed by the fine and numerous finger-like projections present in the ileum |
| 4. | More than one option is correct |
Subtopic: Frogs: Anatomy (Digestive System) |
75%
From NCERT
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In frogs:
1. Respiration by lungs is called pulmonary respiration
2. The lungs are a pair of elongated, pink coloured sacs present below the thorax
3. During aestivation and hibernation gaseous exchange takes place through skin
4. Both (1) and (3) are correct
1. Respiration by lungs is called pulmonary respiration
2. The lungs are a pair of elongated, pink coloured sacs present below the thorax
3. During aestivation and hibernation gaseous exchange takes place through skin
4. Both (1) and (3) are correct
Subtopic: Frogs: Anatomy (Respiratory System) |
94%
From NCERT
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During buccal respiration in frogs:
1. The bucco-pharyngeal cavity is filled with air
2. Gaseous exchange occurs through the lining of buccal cavity
3. Both (1) and (2)
4. Pulmonary respiration stops
1. The bucco-pharyngeal cavity is filled with air
2. Gaseous exchange occurs through the lining of buccal cavity
3. Both (1) and (2)
4. Pulmonary respiration stops
Subtopic: Frogs: Anatomy (Respiratory System) |
87%
From NCERT
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