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Human reproduct ion
Structure of sperm and ovum
-Sperm: tail for mobility + streamlined,
head of sperm has enzyme to dissolve
way into egg, mitochondria for
respiration
-Ovum: rich energy source in yolk, jelly
layer for protection which hardens when
egg fertilised, very large to provide
enough nutrients

Female reproductive…

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Puberty
Changes in girls Changes in boys

Menstrual cycle begins egg released each month Sperm production starts

Growth and development of sexual organs

Growth of armpit + pubic hair Growth of armpit + pubic + chest + facial
hair

Increase in body mass

Development of breasts and rounded shape to…

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