SSC Selection Post 2024 PYQ — Question 48

The correct answer is Option 3 i.e. Mammals .

• Mammals, belonging to the class Mammalia of the animal kingdom, are found in a wide range of habitats, including polar ice caps, deserts, mountains, forests, grasslands, and dark caves.
• Some mammals have adapted to fly, like bats, or live in water, like whales and dolphins.
• The most distinctive feature of mammals is the presence of mammary glands, which produce milk to nourish their young.
• They possess two pairs of limbs that are adapted for various functions such as walking, running, climbing, burrowing, swimming, or flying.
• Mammals have hair-covered skin, external ears (pinnae), and heterodont dentition (different types of teeth in the jaw).
• They have a four-chambered heart, are homoiothermous (warm-blooded), and respire through lungs. Mammals are sexually dimorphic, with separate sexes, and reproduction involves internal fertilisation.