Sexual Reproduction
Chapter Name : Reproduction In Animals |
Sub Topic Code : 103_08_09_02_05 |
Topic Name : Sexual Reproduction |
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Sub Topic Name : Viviparous And Oviparous Animals |
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Introduction
Viviparous – animals which undergo internal fertilization. , Oviparous – animals which undergo external fertilization.
Pre-Requisites:
What does viviparous and oviparous mean?
Activity:
Videos and pictures
Real Life Question:
Why are some animals oviparous and some viviparous?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Viviparous | Young ones grow inside mother's womb. Eggs of viviparous animals lacks a hard shell covering. Fetus is connected to mother's body with placenta. Example – Humans, dogs, cats and most mammals. |
| Oviparous | Young ones grow and develop outside moter's body. Eggs are covered with a hard shell to protect it from any environmental damage. Requires a medium(usually water) for the sperms to move towards the ova and fertilize. Examples – frogs and fishes. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| Videos and documentaries | These will depict how external and internal fertilization takes place in detail |
Real life uses :
Frogs lay eggs in water and they hatch into tadpoles.
Practical examples around us
| Examples | Explainations |
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What you learn in Theory:
What are viviparous and oviparous animals.
What you learn in Practice:
How frogs and mammals reproduce.