TOPIC 4 REPRODUCTION

Reproduction A process to ensure the

continuity of every species. Increases the population of a

species Parents produce offspring similar

to themselves

Reproduction is ensure that the species does not become extinct and multiply the species.

SEXUAL REPRODUCTION

Involves gametes or reproduction cells. The male gametes is known as

spermatozoon (sperm) The female gamete is known as ovum. The fusion of male and female gamete

is known as fertilization Result in the formation of zygote

The process of sexual reproduction

female

ovum

male

Sperm

zygote

Fertilisation (persenyawaan)

ASEXUAL REPRODUCTION

MALE REPRODUCTIVE SYSTEMS

The part of male reproduction system

function

Cross section

Structure of male gametes

Any question.? Orang yang bertnya akan mendapat pahala sebanyak orang yang mendengar.

FEMALE REPRODUCTIVE SYSTEMS

Female gamete known as ovum

The oviduct-the mature ovum release into the fallopian tube

Compare the size of sperm and ovum

FERTILISATION

The fallopian tube-place where the fertilisation occur.

Penetration of the sperm into the ovum

FERTILISATION-FUSES OF FEMALE NUCLEUS AND MALE NUCLEUS

THE MENSTRUAL CYCLE

Thickness of uterine wall during menstrual cycle

Implantation (penempelan) on the uterus wall

PREGNANCY---zygote----embryo---fetus----baby

IMPOTANCE OF PRENATAL CARE

FLOWER AS ORGAN OF REPRODUCTION IN PLANTS

POLLINATION AGENTS

MOTIVASI