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The young one of a kangaroo, called the joey, remains in a pouch in the mother%u2019s body for 7-10 months.Did you know?How do mammals care for their young ones?CheckpointMost mammals have hair on their bodies. The mother feeds her young ones with milk. All mammals look after their young ones till they are old enough to take care of themselves. Human beings are also mammals.The animal world is an amazing one. You will learn many more interesting things about it in your higher classes.Let%u2019s Recall%u00be The process by which a living being produces more of its own kind is called reproduction.%u00be Animals reproduce either by laying eggs or by giving birth to young ones.%u00be An egg has three parts - a hard shell called the egg shell, the albumen and the yolk.%u00be The embryo inside the egg goes through various stages of development and when it is fully developed, the egg hatches. %u00be There are different stages in the life cycle of a butterfly %u2013 egg, caterpillar, pupa and adult.%u00be Mammals are animals that give birth to their young ones and look after them till they are old enough to take care of themselves. The mother feeds the young ones with milk.Let%u2019s Revise Conceptual UnderstandingA. Choose the right answer.1. The larva of a butterfly is called a . a. caterpillar b. maggot c. cocoonreproduction : the process by which a living being produces more of its own kindembryo : the growing baby inside an eggtadpole : a young froglarva : a stage in the development of an egg to adultpupa : the caterpillar with a cocoon around itselfmoulting : the process of shedding the skin by the pupa.mammals : animals that give birth to young ones. Key TermsArrow-Puffin-4_Semester-1 Science 243