B3 Reproduction

Question 1

What is puberty?

Answer 1

This is when your body goes through physical changes during adolescence.

Question 2

Between what ages does puberty take place?

Answer 2

Around 9-14

Question 3

Do girls generally start puberty before boys?

Answer 3

Yes

Question 4

What are 3 changes that happen to both boys and girls during puberty?

Answer 4

Your pubic and underarm hair grows, body odour, growth spurt, emotional changes.

Question 5

What happens to girls during puberty?

Answer 5

Breast develop, ovaries start to release eggs, periods start, hips widen.

Question 6

What happens to boys during puberty?

Answer 6

Voice breaks- gets deeper, testes and penis get bigger, testes start to produce sperm, shoulders widen, hair grows on face and chest.

Question 7

Where are female sex hormones made?

Answer 7

In the ovaries.

Question 8

Where are male sex hormones made?

Answer 8

In the testes.

Question 9

What is the testes and what do they do?

Answer 9

There are 2 testes contained in a bag of skin called the scrotum. The testes produce sperm cells and the male sex hormones.

Question 10

What is the glands and what do they do?

Answer 10

They produce nutrients that help to keep sperm alive.

Question 11

What is the semen?

Answer 11

The mixture of sperm and fluid.

Question 12

What is the urethra?

Answer 12

A tube that carries urine from the bladder out of body or sperm from the sperm duct.

Question 13

What causes all the changes in your body during puberty?

Answer 13

Sex hormones

Question 14

What do the ovaries do?

Answer 14

They contain egg cells. One egg cell is released every month.

Question 15

What do the oviducts do?

Answer 15

They carry an egg to the uterus.

Question 16

What does the uterus do?

Answer 16

This is where a baby develops until it is born.

Question 17

What does the cervix do?

Answer 17

This is a ring of muscle at the entrance to the uterus. It keeps the baby in place while the woman is pregnant.

Question 18

What does the vagina do?

Answer 18

This receives the sperm during sexual intercourse.

Question 19

What is the technical term for reproductive cells?

Answer 19

Gametes

Question 20

What is the name of the process when the nucleus of the sperm joins the nucleus of the egg?

Answer 20

Fertilisation

Question 21

What is the name of the process when sperm is released?

Answer 21

Ejaculation

Question 22

What is the name of the process when an embryo attaches to the lining of the uterus?

Answer 22

Implantation

Question 23

What is the name given to the length of time from fertilisation to birth?

Answer 23

Gestation

Question 24

How long is gestation for an average human?

Answer 24

9 months or 40 weeks

Question 25

After 8 weeks the embryo is now called a ?

Answer 25

Fetus

Question 26

What is the purpose of the placenta?

Answer 26

To pass substances between the mother and baby. It stops infections from teaching the fetus.

Question 27

What is the purpose of the umbilical cord?

Answer 27

Connects the fetus to the placenta

Question 28

What is the purpose of the amniotic fluid?

Answer 28

Acts as a shock absorber protecting the fetus

Question 29

How long does the menstrual last on average?

Answer 29

28 days

Question 30

What happens on day 1 of the menstrual cycle?

Answer 30

Blood from the uterus lining leaves the body through the vagina

Question 31

What day does ovulation happen in the menstrual cycle?

Answer 31

14th day

Question 32

Name two forms of contraception

Answer 32

Condom and contraceptive pill

Question 33

What is a disadvantage of taking the contraceptive pill?

Answer 33

You can still catch STIs

Question 34

What is the underneath of a flower called?

Answer 34

Sepal/s

Question 35

What is male reproductive part of the plant called?

Answer 35

Stamen

Question 36

How many parts does the stamen have?

Answer 36

Two parts

Question 37

What are the two parts of the stamen?

Answer 37

Anther and filament

Question 38

Where is pollen found on a plant?

Answer 38

Anther

Question 39

What is the female sex part of a plant?

Answer 39

Carpel

Question 40

How many parts does the carpel have?

Answer 40

Three parts

Question 41

What are the three parts of the carpel?

Answer 41

Stigma, style and ovary

Question 42

How can seeds be fertilised?

Answer 42

By insects or by wind

Question 43

After fertilisation the ovarys develop into ?..

Answer 43

Fruits

Question 44

What are the three main parts of a seed?

Answer 44

Seed coat, embryo and food store

Question 45

What do seeds need for growth?

Answer 45

Water, oxygen, warmth

Question 46

What is the name of the process where seeds start to grow?

Answer 46

Germination

Question 47

What are the four ways to disperse seeds?

Answer 47

Animal, water, explosive and wind