Reproduction - KS3 science revision quiz

Science Quiz - Reproduction 02 (Questions)

Revise what you know about adolescence and puberty. Do you understand hormones and glands?

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This KS3 Science quiz takes a further look at reproduction. Adolescence is the time when a human's reproductive organs become mature. Puberty is the process of physical changes by which a child's body becomes an adult body capable of reproduction. Boys' and girls' bodies and brains undergo many changes during this time. Everyone's experience of puberty is different - we are all individuals.

Although the changes are very similar for everyone, they will occur at different times for different people and they will be slightly different. As an example, some girls' hips and some boys' shoulders will grow wider than others. That is perfectly normal. These changes are caused by hormones being released by several different glands in our body.

Changes during puberty happen both internally and externally.

For girls, their ovaries begin to release eggs and they start to menstruate. Their body shape changes - their breasts start to develop, their hips become wider and pubic and underarm hair grows. For boys, their penis and testes grow larger and the testes begin to produce sperm cells. As well as underarm and pubic hair, they grow facial hair too. Their voice deepens and they develop broader shoulders and larger muscles.

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Which of the following physical changes, in girls, during adolescence is NOT true?

[ ]	Breasts start to develop
[ ]	Hips get narrower
[ ]	Ovaries start to release eggs
[ ]	Pubic and underarm hair grow

Which of the following physical changes, in boys, during adolescence is NOT true?

[ ]	Facial hair grows
[ ]	Muscles and penis grow bigger
[ ]	Testes start to produce sperm
[ ]	Voice becomes higher

The physical changes during adolescence occur .......

[ ]	because glands make hormones to start the changes
[ ]	because you feel and think differently
[ ]	because you have mood swings
[ ]	because your emotions change

Which of the following does an implanted fertilised egg NOT need?

[ ]	Carbon dioxide
[ ]	Food
[ ]	Oxygen
[ ]	Warmth

The fertilised egg starts to divide. At first it is called .......

[ ]	a baby
[ ]	a foetus
[ ]	a period
[ ]	an embryo

Which of the following is NOT true?

[ ]	Carbon dioxide passes from the foetal blood to the mother
[ ]	Food passes from the mother's blood to the foetal blood
[ ]	Oxygen passes from the mother's blood to the foetal blood
[ ]	The foetal blood and the mother's blood mix

Which of the following is NOT true about a sperm cell?

[ ]	It has a tail which moves so it can swim
[ ]	The head contains enzymes to make a hole in the egg cell
[ ]	The nucleus contains chromosomes
[ ]	They live for a long time

Which of the following is NOT true about an egg cell?

[ ]	It has a massive food store for the developing embryo
[ ]	It is much larger than a sperm cell
[ ]	One egg is only ever released at a time
[ ]	The nucleus contains chromosomes

Which of the following does NOT control the menstral cycle?

[ ]	A fertility drug
[ ]	Oestrogen alone
[ ]	Oestrogen and progesterone together
[ ]	Progesterone alone

10.

Which of the following does NOT reduce fertility?

[ ]	Female sex hormone in a fertility drug
[ ]	Female sex hormone in an oral contraceptive
[ ]	Female sex hormone to prevent ovulation
[ ]	Female sex hormone to mimic pregnancy

You can find more about this topic by visiting BBC Bitesize - Reproduction

Science Quiz - Reproduction 02 (Answers)

Which of the following physical changes, in girls, during adolescence is NOT true?

[ ]	Breasts start to develop
[x]	Hips get narrower
[ ]	Ovaries start to release eggs
[ ]	Pubic and underarm hair grow

Hips get wider

Which of the following physical changes, in boys, during adolescence is NOT true?

[ ]	Facial hair grows
[ ]	Muscles and penis grow bigger
[ ]	Testes start to produce sperm
[x]	Voice becomes higher

Voice becomes deeper

The physical changes during adolescence occur .......

[x]	because glands make hormones to start the changes
[ ]	because you feel and think differently
[ ]	because you have mood swings
[ ]	because your emotions change

The others are all emotional changes which occur as the brain develops from that of a child to that of an adult

Which of the following does an implanted fertilised egg NOT need?

[x]	Carbon dioxide
[ ]	Food
[ ]	Oxygen
[ ]	Warmth

Carbon dioxide is removed as the fertilised egg develops

The fertilised egg starts to divide. At first it is called .......

[ ]	a baby
[ ]	a foetus
[ ]	a period
[x]	an embryo

The embryo is called a foetus at about nine weeks

Which of the following is NOT true?

[ ]	Carbon dioxide passes from the foetal blood to the mother
[ ]	Food passes from the mother's blood to the foetal blood
[ ]	Oxygen passes from the mother's blood to the foetal blood
[x]	The foetal blood and the mother's blood mix

The two blood supplies NEVER mix but materials are transferred from mother to foetus through the placenta

Which of the following is NOT true about a sperm cell?

[ ]	It has a tail which moves so it can swim
[ ]	The head contains enzymes to make a hole in the egg cell
[ ]	The nucleus contains chromosomes
[x]	They live for a long time

They live for a very short time

Which of the following is NOT true about an egg cell?

[ ]	It has a massive food store for the developing embryo
[ ]	It is much larger than a sperm cell
[x]	One egg is only ever released at a time
[ ]	The nucleus contains chromosomes

Sometimes two (or more) eggs are released at the same time. When this happens, if they are all fertilised, non-identical twins form

Which of the following does NOT control the menstral cycle?

[x]	A fertility drug
[ ]	Oestrogen alone
[ ]	Oestrogen and progesterone together
[ ]	Progesterone alone

Oestrogen causes the uterus lining to thicken, progesterone maintains the lining. Together they control ovulation

10.

Which of the following does NOT reduce fertility?

[x]	Female sex hormone in a fertility drug
[ ]	Female sex hormone in an oral contraceptive
[ ]	Female sex hormone to prevent ovulation
[ ]	Female sex hormone to mimic pregnancy

The fertility drug stimulates eggs to mature and be released