GK
GENERAL SCIENCE
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
They have hair on their bodies
|
|
|
Females feed their young with milk
|
|
|
They have feathers.
|
|
|
They have a beak.
|
|
|
They breathe with their lungs.
|
Detailed explanation-1: -Mammals are animals that breathe through their lungs, give birth to live offspring (rather than eggs), and feed their young with their mothers’ milk. Oxygen, a molecule found in the air and water, is required by all species, including humans.
Detailed explanation-2: -Mammalian lungs have millions of tiny air sacs called alveoli. They provide a very large surface area for gas exchange. The heart of a mammal consists of four chambers. This makes it more efficient and powerful for delivering oxygenated blood to tissues.
Detailed explanation-3: -The presence of hair or fur. Sweat glands. Glands specialized to produce milk, known as mammary glands. Three middle ear bones. A neocortex region in the brain, which specializes in seeing and hearing. Specialized teeth. A four-chambered heart. 19-Mar-2020