| 1. | Aptenodytes, Struthio, Pteropus, Macaca |
| 2. | Neophron, Columba, Crocodilus, Testudo |
| 3. | Balaeonoptera, Equus, Psittacula, Salamandra |
| 4. | Corvus, Marcopus, Naja, Hyla |
| Column-I (Respiratory organ) |
Column-II (Class) |
||
| A. | Gills | 1. | Aves |
| B. | Lungs | 2. | Pisces |
| C. | Air sacs | 3. | Reptilia |
| D. | Moist skin | 4. | Amphibia |
| 1. | Characteristic feature is presence of feathers |
| 2. | Forelimbs are modified into wings |
| 3. | Skin is dry without glands in all birds |
| 4. | They are oviparous and development is direct |
Animals having a built in thermostat to maintain constant body temperature are known as
1. biothermic
2. poikilothermic
3. oligo thermic
4. homeothermic
| Statement I: | Birds have a fully ossified bony endoskeleton with hollow bones that contain air cavities. |
| Statement II: | Birds possess a three-chambered heart that facilitates efficient circulation. |
| 1. | Both Statement I and Statement II are correct. |
| 2. | Both Statement I and Statement II are incorrect. |
| 3. | Statement I is correct but Statement II is incorrect. |
| 4. | Statement I is incorrect but Statement II is correct. |
| 1. | They have a four-chambered heart |
| 2. | They are ectothermic |
| 3. | They exhibit external fertilization |
| 4. | They possess mammary glands |
Fully ossified endoskeleton with hollow long bones, digestive tract with additional chambers and ability to maintain constant body temperature will be found in
1. Pterophyllum
2. Psittacula
3. Pteropus
4. Testudo