Which set contains only changes that are specifically associated with girls in the given text?
Wider hips, breast development and menstruation
What is menstruation?
The release of an unfertilised egg together with the lining of the uterus
A fertilised egg eventually develops into a baby. Which organ provides the place where the baby develops?
Uterus
A girl begins puberty and notices several changes. Which combination is most likely?
Wider hips, development of breasts and growth of body hair
What is fertilisation?
When a sperm and an egg join together
A fertilised egg is found developing in the uterus. Which event must have occurred before this?
A sperm joined with an ovum
Which sequence correctly describes reproduction?
Sperm + ovum → fertilisation → development of a baby
A blockage occurs in the oviduct. Which process would most directly be affected?
Fertilisation
A boy notices that his voice becomes deeper during puberty. Which other change is likely to happen to him?
His shoulders and chest become broader
A girl experiences growth, increased body hair and oily skin. Later, she begins menstruation. Which conclusion is best supported?
Her reproductive system has undergone changes associated with puberty
A blockage occurs in the sperm duct. What is the most likely consequence based on its function?
Sperm cannot be carried towards the penis
Which pair of changes provides the strongest evidence that puberty is preparing the body for reproduction?
Production of sperm in boys and development of ova in girls
Why might puberty begin at different ages in different people?
Puberty does not begin at exactly the same age for everyone
Where does fertilisation take place according to the information given?
Oviduct
Which comparison between sperm and ova is correct?
Both are sex cells, but sperm are male sex cells and ova are female sex cells
A girl has not become pregnant. Her menstrual cycle continues approximately once a month. Which statement best explains this?
An unfertilised egg is released together with the lining of the uterus
Which change is specifically described for girls?
Hips become wider and breasts develop
A student claims: 'Menstruation means that fertilisation has happened.' Why is this statement incorrect?
Menstruation involves an unfertilised egg
A sperm needs to travel from the testis towards the penis. Which structure carries it?
Sperm duct
Which pair contains changes that can occur in both boys and girls?
Growth spurt and increased body hair
What happens to menstruation if an egg is fertilised?
Menstruation stops
Which structure receives sperm from the male?
Birth canal
What are the female sex cells called?
Ova
Consider these statements: 1. Boys produce sperm during puberty. 2. Girls develop ova during puberty. 3. Both boys and girls can experience growth spurts. 4. Only girls experience hormonal changes. Which combination is correct?
1, 2 and 3 only
What causes the changes that happen during puberty?
Hormones
Which sequence correctly follows the pathway of the female reproductive process described in the text?
Ovary → oviduct → uterus
Which organs produce ova?
Ovaries
A boy has begun producing sperm but has not yet developed all the physical characteristics of an adult. What does this demonstrate?
Puberty occurs gradually in stages
A girl menstruates. Which conclusion can be made from the information provided?
An unfertilised egg has been released together with the uterine lining
What is puberty?
A stage when a person becomes able to reproduce
Two students are the same age. One has started puberty while the other has not. Which conclusion is most appropriate?
This can be normal because puberty starts at different ages
A student says, 'Only girls experience changes during puberty.' Which evidence shows this is incorrect?
Boys also grow taller, develop body hair and experience changes in their voice
Which observation would provide evidence that puberty is controlled by hormones rather than simply by growth in height?
Several different body changes occur at the same stage of development
Which change is common to both boys and girls?
They grow taller and heavier
A girl's ovaries begin developing ova during puberty. What is the significance of this change?
Her reproductive system is developing the ability to produce female sex cells
Which sex cells are produced by males?
Sperm
A student's diagram labels the ovary as the place where the baby develops. Which correction is needed?
The uterus is where the baby develops; the ovary produces ova
Which diagram correctly represents the relationship between the male reproductive structures?
Testis → sperm duct → penis
A student groups puberty changes into 'boys only', 'girls only' and 'both'. Which should be placed in the 'both' group?
Oily skin and growth of body hair
A scientist wants to identify whether a physical change is associated with puberty in both sexes. Which observation would provide the strongest evidence?
Both boys and girls show increased body hair
Which statement best explains why hormones are important during puberty?
They cause the physical changes associated with puberty
Where does the baby develop?
Uterus
A boy's body begins producing sperm. What does this indicate?
He has reached a stage of puberty
Which change is specifically described for boys?
Voice becomes deeper and shoulders become broader
Which change commonly happens to both boys and girls during puberty?
Growth of body hair
Which set contains only changes that are specifically associated with boys in the given text?
Broader shoulders, deeper voice and sperm production
Which organ produces sperm?
Testis
Why does the reproductive system change during puberty?
It becomes able to produce sex cells needed for reproduction
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