Q- What are the differences between the animals belonging to Aves group and those in Mammalian group?
Answer- Aves:
1. The exoskeleton of Aves is feathery in nature.
2. The skin of Aves is thin and non-glandular in nature.
3. Aves lay egg or they are generally oviparous.
4. Wings are present in Aves.
5. Mammary gland is not present in Aves.
Mammals:
1. The exoskeleton of Mammals is hairy in nature.
2. The skin of Mammals is thick with sweat and oil glands.
3. Mammals mostly give birth to young once or they are generally viviparous.
4. Wings are absent in Mammals.
5. Mammary gland is present in Mammals that is why they are called as mammals.