State two features of class mammalia

Explanation

**Step-by-Step Text Solution:**

1. **Definition of Class Mammalia**: Class Mammalia consists of warm-blooded vertebrates known as mammals. They are characterized by the presence of mammary glands and hair.

2. **Feature 1 - Mammary Glands**: One of the primary features of mammals is the presence of mammary glands. These glands produce milk, which is used to nourish their young. This is a defining characteristic of the class Mammalia.

3. **Feature 2 - Hair**: Another significant feature of mammals is the presence of hair or fur on their bodies. Hair serves various functions, including insulation, protection, and sensory perception.

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