| Assertion (A): | All the mammals are endotherm. |
| Reason (R): | Mammals possess four chambered heart and respire through lungs |
| 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. |
Homeothermy is exhibited by:
1. All amniotes
2. Birds and Mammals
3. All deuterostomes
4. Reptiles and Mammals
Consider the following characters:
| I. | Wish bone furculum |
| II. | Pneumatic bones |
| III. | Feathers |
| IV. | Endothermy |
| V. | Left aortic arch |
| VI. | Four chambered heart |
Which of these are unique to birds?
| 1. | I, II and III only |
| 2. | I, II, III and IV only |
| 3. | I, II, III, IV and V only |
| 4. | All |
Identify the incorrectly matched pair:
|
1. |
Ornithorhynchus: |
Oviparous mammal |
|
2. |
Macropus: |
Marsupial mammal |
|
3. |
Balaenoptera: |
Largest land mammal |
|
4. |
Pteropus: |
Flying mammal |
Birds are not characterized by:
1. Forelimbs modified into wings
2. Fully ossified endoskeleton
3. Skin dry without glands except for oil gland
4. Oviparous and external fertilization
Pteropus is a/an:
| 1. | Limbless amphibian |
| 2. | Extinct reptile that evolved into mammals |
| 3. | Bony fish that migrates from sea water to fresh water for breeding |
| 4. | Mammal with flight |
Which of the following represents order of 'Horse'?
1. Equidae
2. Perissodactyla
3. Caballus
4. Ferus
Which among these is the correct combination of aquatic mammals?
(1) Seals, Dolphins, Sharks
(2) Dolphins, Seals, Trygon
(3) Whales, Dolphins, Seals
(4) Trygon, Whales, Seals
Which one of the following characteristics is not shared by birds and mammals?
(1) Breathing using lungs
(2) Viviparity
(3) Warm blooded nature
(4) Ossified endoskeleton
Which one of the following in birds, indicates their reptilian ancestry?
(1) Scales on their hind limbs
(2) Four chambered heart
(3) Two special chambers crop and gizzard in their digestive tract
(4) Eggs with a calcareous shell
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