Question #d7efe

1 Answer
Feb 8, 2018

Humans, Monkeys, elephants, etc. see the explanation why?

Explanation:

Mammalia is a class defined by following major characteristics:

  1. Four-chambered heart.

  2. Mammary glands are used to produce milk to nourish their young.

  3. Warm-blooded

  4. viviparous (they give birth to live offspring after initial development in mother's body) although some are oviparous (they lay eggs)

  5. Parental care is well developed

  6. 9 vertebrae in the neck

Examples include:
Humans (Homo sapiens)
Tiger (Panthera tigris)
Polar bear (Ursus maritimus)
Red fox (Vulpes vulpes)