| $Aves$ | $Mammalia$ |
|---|---|
| $Aves$ possess feathers and a beak. | $Mammals$ do not have feathers and lack a beak. |
| They are oviparous (egg-laying). | They are mostly viviparous (give birth to young),though some are oviparous. |
| They have pneumatic (hollow) bones to aid in flight. | They possess mammary glands to nourish their young. |
Explore More
Vedclass Products
Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.
Start Free TrialGenerate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.
Try FreeLive online exams with unlimited students, 360° analytics & white-label branding.
See Demo