Premium Online Home Tutors
3 Tutor System
Starting just at 265/hour
Answer :
Aves |
Mammalia |
They have their body covered with feathers which provides them thermal insulation and water proofing. |
They have their body covered with hairs and the sweat glands are present under them. |
They have a streamlined body which helps them in flight. |
They don't have a streamlined body except for whales which helps them in swimming. |
They possess a beak which helps them in preening and feeding but they lack teeth. |
They don't have any beak but have a mouth with teeth which helps them in feeding. |
They have pneumatic bones which are hollow and provides light body weight which is helpful during flight. |
They have solid bones which becomes framework of their body. |
Forelimbs are modified into wings which help them in flight. |
Forelimbs are present as hands which help in various activities. |