Question

Write the characteristic feature of animal mammals?

Answer 1

Class Mammalia comes under the kingdom Animalia.Mammals are a group of vertebrate animals constituting the class Mammalia and are characterized by the presence of mammary glands.

Complete Step by step solution:
-They are found in a variety of habitats.
-The main characteristic feature is the presence of milk producing glands.
-They have two pairs of limbs adapted for walking, running, climbing, burrowing, swimming and flying.
-Different types of teeth are present and they are arranged on a jaw.
-They possess body hairs.
-External ear (pinna) is present.
-They are homoiothermous.
-Their hearts are four chambered.
-Their fertilisation is internal.
-They are viviparous.
-They take care of their young ones and nourish them with the milk produced in the milk ducts.
-Respiration is by lungs.
-Sexes are separate.

Note:
These are the common characteristics of a mammal but there are animals with exceptions too. Most mammals are intelligent, with some possessing large brains, self-awareness, and tool use. Mammals can communicate and vocalize in several ways, including the production of ultrasound, scent-marking, alarm signals, singing, and echolocation.