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: Study of Aves & Mammals |
84%
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: Study of Aves & Mammals |
82%
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. |
| 1. | I is correct but II is incorrect |
| 2. | Both I and II are correct. |
| 3. | Both I and II are incorrect. |
| 4. | I is incorrect but II is correct. |
Subtopic: Study of Aves & Mammals |
88%
From NCERT
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In birds:
| I: | The digestive tract of birds has additional chambers, the crop and gizzard. |
| II: | Air sacs connected to lungs supplement respiration. |
| III: | They possess beak with teeth. |
| 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: Study of Aves & Mammals |
75%
From NCERT
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You find the skeletal remains of an animal which show the following features:
The organism most likely is a:
1. Mammal
2. Reptile
3. Bird
4. Amphibian
| I: | It is fully ossified [bony] |
| II: | Long bones are hollow |
The organism most likely is a:
1. Mammal
2. Reptile
3. Bird
4. Amphibian
Subtopic: Study of Aves & Mammals |
91%
From NCERT
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How many of the given statements regarding birds are correct?
| I: | They have feathers and most of them can fly. |
| II: | They possess beak. |
| III: | They have scales on the forelimbs and hindlimbs are modified into wings. |
| IV: | They have dry skin without glands except the oil gland at the base of the tail. |
| V: | They possess a fully ossified (bony) endoskeleton. |
| VI: | They have long bones that are solid without air cavities (pneumatic). |
| 1. | 3 | 2. | 4 |
| 3. | 5 | 4. | 6 |
Subtopic: Study of Aves & Mammals |
61%
From NCERT
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Identify the incorrectly matched pair:
| Biological name | Common name | |
| 1. | Aptenodytes | Penguin |
| 2. | Pavo | Peacock |
| 3. | Struthio | Pigeon |
| 4. | Psittacula | Parrot |
Subtopic: Study of Aves & Mammals |
79%
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: Study of Aves & Mammals |
91%
From NCERT
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Regarding mammals:
| I: | The most unique characteristic is the presence of mammary glands. |
| II: | Skin is unique in possessing hair. |
| III: | Heart is unique in being four-chambered. |
| IV: | Viviparity is a unique feature. |
| 1. | Only I and II are correct |
| 2. | Only III and IV are correct |
| 3. | Only I and III are correct |
| 4. | Only II and IV are correct |
Subtopic: Study of Aves & Mammals |
86%
From NCERT
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Identify the incorrect statements regarding mammals:
I: External ears are absent
II: All teeth are of the same type
III: They are homoiothermous
1. Only I and II
2. Only I and III
3. Only II and III
4. I, II and III
I: External ears are absent
II: All teeth are of the same type
III: They are homoiothermous
1. Only I and II
2. Only I and III
3. Only II and III
4. I, II and III
Subtopic: Study of Aves & Mammals |
80%
From NCERT
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