Give the important features of class Mammalia.
Answer:
The important features of class Mammalia are:
- They are warm-blooded animals.
- Their heart is four-chambered.
- They have mammary glands which produce milk with which they nourish their young ones.
- They give birth to young ones, with the exception of platypus and echidna. Kangaroos give birth to very poorly developed young ones.