Class 4 EVS Chapter 9 Reproduction in Animals @worldofworksheetswow8570




Reproduction is the process by which living things produce offspring, or babies, to ensure the survival of their species. All animals, including humans, reproduce in two main ways: laying eggs or giving birth to live young.

Types of Reproduction

There are two main types of reproduction in animals:

  1. Oviparous Animals (Egg-laying animals):

    • Animals like birds, fish, reptiles, and insects lay eggs.
    • These eggs contain the baby inside a protective shell, and after a while, the baby hatches from the egg.
    • Example: A hen lays eggs, and after some time, chicks hatch from the eggs.

  2. Viviparous Animals (Animals that give birth to live young):

    • Animals like mammals (humans, cows, cats) give birth to live babies.
    • The baby grows inside the mother’s body until it is ready to be born.
    • Example: A dog gives birth to puppies.

Life Cycle of a Frog (Example of Egg-laying Animal)

  1. Egg: Frogs lay eggs in water.
  2. Tadpole: The egg hatches into a tadpole, which lives in water and breathes with gills.
  3. Adult Frog: The tadpole grows legs, loses its tail, and becomes an adult frog that can live on land.

Importance of Reproduction

  • Reproduction ensures that animals do not become extinct.
  • It helps to maintain the balance of life in nature.

Animals have different ways of reproducing, but the goal is the same: to bring new life into the world.

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