Sexual Reproduction
Chapter Name : Reproduction In Organisms |
Sub Topic Code : 103_12_01_02_01 |
Topic Name : Sexual Reproduction |
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Sub Topic Name : Pre-Fertilization Events |
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Introduction
Before fertilization, male and female gametes are formed which are haploid.
Pre-Requisites:
Sexual reproduction is the process involving male and female gametes.
Activity:
Go through the gametogenesis diagrammatic representation
Real Life Question:
What are the basis of zygote formation?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Hermaphrodites | Animals possessing both male and female reproductive organs |
| Staminate | Unisexual male flower |
| Pistillate | Unisexual female flower |
| Heterothalic & dioecious | Denote unisexual condition |
| Homothallic & monoecious | Denote the bisexual condition |
| Egg or ovum | Female gamete |
| Sperm or antherozoid | Male gamete |
| Heterogametes | Sexually different gametes |
| Homogametes (isogametes) | Gametes similar to each other, difficult to differentiate male and female. |
| Gametogenesis | Process of formation of male and female gametes. |
| Pollination | Transfer of pollen grains to stigma |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| Reproduction flow chart | Understanding the process. |
Places to visit :
Biology Laboratory
Practical examples around us
| Examples | Explainations |
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What you learn in Theory:
How gamete formation does take place?
What you learn in Practice:
How does gametogenesis act as first step of fertilization.