Biology

What is asexual reproduction?

ASexual reproduction is procucing identical individuals from only one parents.

GIve two disadvantages and two advantages of asexual reproduction.

• HIgher rate of success as only one parent is needed

• Many individuals can be produced from only one parent

• NO variation

What is sexual reproduction?

Sexual reproduction is producing no identically individuals by the fussion of the male and female gamites, from two parents

What is fertilisation?

Fertilisation is the fussion of sperm, nucleus to the ovum to produce zygote

GIve the function of testis

• Produces sperm

• Only human organ found outside the body

Give the functions of scrotum

A sac holding the testis at the right distance from the body

GIve the function of the sperm duct

• Tube carrying sperm

GIve the function of prostate gland

• Produces a nourishing fluid for sperm

Give the functions of urethra

• Tube passing urine and sperm out of the body

GIve the functions of penis

• Organ containing spongy tissues filled with blood

• Deposit sperm in the vagina

GIve two functions of ovaries

• Contain one egg cell named ova

• Releases one ovum energy every 28 days

Give the functions of ovi duct

• ONly place where fertilisation occurs

• Ovum travels from ovaries in ovi duct

GIve the functions of uterus

• Place where there is implatation for the zygote to develop into a fetus

• Soft walls filled with blood which provide food and oxygen for the development

Give the function of cervix

• Separates the uterus from the vagina

Give the functions of vagina

• Sperm is deposited here

• Act as a birth canal

Name two stds

• Aids caused by HIV

• Syphilis and gonorrhea caused by bacteria