Sexual Reproduction
Chapter Name : Reproduction In Animals |
Sub Topic Code : 103_08_09_02_04 |
Topic Name : Sexual Reproduction |
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Sub Topic Name : Development Of Embryo |
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Introduction
Development of embryo – called as embryo-genesis. As fertilized egg develops into a baby it goes through 3 main stages : stage of zygote, stage of embryo and stage of fetus.
Pre-Requisites:
What is embryo development? How does it take place and how long does it last for?
Activity:
Videos, pictures and an actual embryo development sample in muesums.
Real Life Question:
How long does it take for a for a baby to be born and how does the fetus get its nutrition during it's development stages?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Embryo | Zygote is called embryo from it;s 2nd to 8th week of it's life. Placenta grows between the embryo and uterus which acts as filter barrier and also absorbs food and water for the fetus. |
| Fetus | The growing organism is called fetus from 3rd month till it's birth. All different parts of body and organs develop and becomes well modified. Sex organs become apparent. During the final weeks before birth fetus grows rapidly in size and puts on weight. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| Videos, documentaries | It will show the development of the baby in mother's womb in detail |
Real life uses :
The mother's tummy gradually increases in size during the 9 months is because the fetus is growing bigger in size and also increasing in it's weight.
Places to visit :
Museums, biology lab or department of gynecology in hospitals or clinics
Practical examples around us
| Examples | Explainations |
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What you learn in Theory:
How development of embryo takes place in mother's womb
What you learn in Practice:
The mother needs to take care of herself during pregnancy because whatever she eats\drinks or does directly or indirectly effects the child.