Question

Name the following:

Organism in which external ear (pinna) is present.

Answer 1

Mammalia:

1. Mammals are warm-blooded animals.
2. The most unique feature of mammalian characteristics is the presence of mammary glands for the production of milk to nourish their young.
3. They have four-chambered hearts.
4. Their skin has hairs as well as sweat and oil glands.
5. External ear or pinnae are present.
6. Human beings belonging to the class Mammalia are organisms that have an external ear (pinna).