Second Term Lesson Note for Week One
Class : JSS One
Subject : Basic Science
Topic : Reproductive System
Duration : 40 Minutes
Period : Single Period
Reference Book :
Basic Science and Technology for Junior Secondary School, Book 1.
Lagos State Unified schemes of work for Junior Secondary School, JSS 1 – 3.
Online Resources
Instructional Material :
Learning Objectives : By the end of the lesson learners will be able to :
WEEK ONE
REPRODUCTIVE SYSTEM
CONTENT
Definition
Male and female internal and external organs and their Functions
Care of the male and female reproductive organs
DEFINITION
Reproduction is the ability of living things to produce young ones like them. Reproduction is one of the characteristics of living thing which is for the continuation of life.
There are two types of reproduction. These are:
Asexual reproduction
Sexual reproduction
Asexual reproduction – this kind of reproduction involves a single parent to produce young ones. In asexual reproduction, the individual grows and splits into two and this process continues. Examples are binary fission, vegetative reproduction (as in potato, cassava, yam etc.) and so on
Sexual reproduction – this is the kind of reproduction which involves two sexes. The male produces a sex cell and the female does that too. This is the most common means of reproduction in animals but also found in plants.
THE MALE REPRODUCTIVE SYSTEM
The male reproductive system is made up of organs found both outside and inside the body. Such as the penis, scrotum, testes etc.
The male sex cell is called the sperm. This is what fusses with the female sex cell at fertilization.
The following are the male reproductive organs, their location and respective functions
ORGAN
LOCATION
FUNCTION
1
Testes
Outside the body
Production of sperm (the male sex cell)
2
Scrotal sac
Outside the body
Houses the testicles or testes
3
Penis
Outside the body
The male copulating organ. It penetrates into the vagina and conveys the sperm there
4
Urethra
Inside the body
It is the passage of urine and sperm
5
Seminal vesicles
Inside the body
Produces fluid that forms part of the semen
6
Vas deferens
Inside the body
Transfers the sperm into seminal vesicle
THE FEMALE REPRODUCTIVE SYSTEM
The female reproductive system is made up of both external and internal organs that are used for reproductive processes. Examples are the ovary, vagina, fallopian tube etc.
The following are the female reproductive organs, their location and respective functions
ORGAN
LOCATION
FUNCTION
1
Ovaries
Inside the body
Produces eggs and the female sex hormones
2
Ova (egg)
Inside the body
This is the female sex cell
3
Uterus (womb)
Inside the body
Houses the foetus
4
Vagina
Inside the body
Receives the penis during copulation
5
Cervix
Inside the body
The opening in the womb that leads to the vagina
6
Hymen
Inside the body
A thin sheet that covers the vagina of a female child who is a virgin
Care of the female reproductive organs
Bath at least twice daily
Avoid taking illegal drugs
Use clean toilets
Wear clean and neat panties
Visit the gynecologist in case of any abnormalities
Care of the male reproductive organs
Bath daily
Avoid tight underwear and clothing
Eat a healthy and balanced diet
Wear protective gear when playing contact sports
CLASSWORK 1
What is reproduction?
Explain the two types of reproduction
ASSIGNMENT 1
SECTION A
These entire list of living things does not breast feed their young ones except….. (a) lizard (b) hen (c) snake (d) squirrel
The male sex cell is called ….. (a) ovum (b) gamete (c) sperm (d) penis
Which of these is a component of the male reproductive system? (a) uterus (b) sperm (c) vagina (d) ovary
The doctor that specializes on female reproductive health is called ….. (a) gynecologist (b) gyneacologist (c) gynecologyst (d) ginecologist
The fusion of the male and the female sex cell is called (a) fermentation (b) fertilization (c) pregnancy (d) reproduction
SECTION B
Mention two parts of male and female reproductive system each and state their functions
Explain these: (a) zygote (b) fertilization