- 1(current)
Q. No.In birds:
| a: | the characteristic feature is the presence of feathers. |
| b: | forelimbs are modified into wings. |
| c: | flight is present in all members. |
| d: | hind limbs do not have scales. |
1. Only (a) and (d) are incorrect
2. Only (c) and (d) are correct
3. (a), (b) and (c) are correct
4. Only (a) and (b) are correct
Subtopic: Â Study of Aves & Mammals |
 88%
From NCERT
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Birds are not characterized by:
1. a fully ossified endoskeleton
2. pneumatic long bones
3. absence of crop and gizzard in the digestive tract
4. a dry skin without glands except the oil gland
Subtopic: Â Study of Aves & Mammals |
 86%
From NCERT
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Consider the given two statements:
| I: | Birds have a four chambered heart and are warm blooded. |
| II: | Respiration in birds is by lungs that are connected to air sacs. |
2. Both I and II are correct.
3. Both I and II are incorrect.
4. I is incorrect but II is correct.
Subtopic: Â Study of Aves & Mammals |
 91%
From NCERT
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The most unique characteristic of mammals is the presence of:
| 1. a four chambered heart | 2. a single aortic arch |
| 3. homeothermy | 4. mammary glands |
Subtopic: Â Study of Aves & Mammals |
 93%
From NCERT
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Hints
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Which of the following is an egg laying mammal?
| 1. Ornithorhynchus | 2. Macropus |
| 3. Macaca | 4. Balaenoptera |
Subtopic: Â Study of Aves & Mammals |
 93%
From NCERT
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Flying fox is a/an:
| 1. | Flightless bird | 2. | Limbless amphibian |
| 3. | Viviparous mammal | 4. | Economically important insect |
Subtopic: Â Study of Aves & Mammals |
 86%
From NCERT
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Hints
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- 1(current)
Q. No.
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