Question

Give difference between aves and mammals.

Answer 1

Aves or birds are vertebrates that are able to fly. Mammals are the animals characterised by the presence of mammary glands.

Complete answer:
Vertebrates are the group of animals that possess a backbone or vertebral column. They include birds, fishes, reptiles, mammals etc. Vertebrates also have a well-developed brain, a circulatory system with a heart, mouth with muscles and a pharynx. The vertebrates are further classified into five classes.

The difference between aves and mammals are:

Aves	Mammals
1. Aves are the class of vertebrates that are characterised by the presence of feathers and wings. All birds fall under this class.	1. Mammals are a group of animals that have skin covered with hair or fur on their body. Mammals include elephants, tigers, lions, whales, primates, humans, dolphins, etc.
2. The forelimbs are modified into wings for flight.	2. Mammals have mostly four limbs that are modified for walking, climbing, running, etc.
3. Birds lay eggs.	3. Mammals are the animals that give birth to its young and have mammary glands that secrete milk.
4. Birds have long hollow bones that help them to fly.	4. Mammals have thick and dense bones filled with bone marrow.

Note: Kingdom Animalia comprises animals that can be unicellular or multicellular. Both Aves and mammals are multicellular, eukaryotic animals. Aves and mammals both have four chambered hearts and are warm blooded animals. While both share some common characteristics, there are distinguishing features that differentiates the two classes.