Reproduction in Animals: Viviparous and Oviparous Species
In the world of animals, reproduction manifests through viviparous and oviparous methods. Viviparous creatures like mammals give birth to young ones, while oviparous animals such as birds and reptiles lay eggs. The offspring develop distinctively, showcasing metamorphosis in certain species. Explore examples and the life cycle of frogs, and compare these processes to human body changes as we grow.
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Presentation Transcript
REPRODUCTION IN ANIMALS PREPARED BY A K MISHRA, TGT/SS, AECS-3,MUMBAI CLASS VIII MODULE 3
VIVIPAROUS AND OVIPAROUS ANIMALS VIVIPAROUS The animals which give birth to young ones are called viviparous animals. Example- Mammals like cow,dog,cat etc OVIPAROUS Those animals which lay eggs are called oviparous. Example- Hen,Duck,Birds etc.
The new individuals which are born or hatched from the eggs continue to grow till they become adult. In some animals ,the young ones may look different from the adults. Egg larva or caterpillar pupa adult
METAMORPHOSIS The transformation of the larva into an adult through drastic changes is called metamorphosis. Egg tadpole (larva) adult
*Similarly , the caterpillar or the pupa of silkworm looks very different from the adult moth. * The features that are present in the adult are not found in these young ones.
What about the changes, that we observe in our human body as we grow? * In human beings ,body parts similar to those present in the adults are present in from the time of birth.
