Breathing and Reproduction

Question 1

What happens when you breathe in?

Answer 1

Air goes down the trachea, through the bronchi, through the bronchioles and into the alveoli.

Question 2

What happens in the Alveoli?

Answer 2

Gas exchanges take place.

Question 3

What happens in a gas exchange?

Answer 3

Oxygen diffuses from the air into the blood and carbon dioxide diffuses out the blood, into the alveoli and is breathed out.

Question 4

What is a peak flow meter?

Answer 4

A small device used to access a persons vital capacity

Question 5

How do you use a peak flow meter?

Answer 5

Take a deep breathe and then breathe out as quickly and hard as possible into the device.

Question 6

What happens when a person is having an asthma attack?

Answer 6

The muscles around their bronchioles contract narrowing airways. The lining of the airways become enflamed and it is hard to breathe.

Question 7

What do inhalers contain?

Answer 7

Drugs that help to open up the airways.

Question 8

What are gametes?

Answer 8

Sex cells like sperm and ovum

Question 9

What is the male gamete?

Answer 9

Sperm

Question 10

What is the female gamete?

Answer 10

Ovum

Question 11

Where are sperm made?

Answer 11

The testes

Question 12

When are the sperm made?

Answer 12

After puberty

Question 13

What is semen?

Answer 13

Semen is sperm mixed with a liquid that is ejaculated from the penis during sexual intercourse.

Question 14

Where is ovum made?

Answer 14

The ovaries

Question 15

How often are the ovum released from the ovaries?

Answer 15

Every 28 days

Question 16

What happens when an egg is released?

Answer 16

Passes into the fallopian tube where it may meet sperm which has entered the vagina during sexual intercourse.

Question 17

What happens if the egg isn’t fertilised by sperm?

Answer 17

The egg will die after a day and pass out the vagina.

Question 18

How many sperm are released during sexual intercourse?

Answer 18

Millions

Question 19

What happens when sperm is released?

Answer 19

They goes to the fallopian tube where one might fertilise an egg.

Question 20

What is fertilisation?

Answer 20

When the nuclei of a perm and egg cell fuse together.

Question 21

What is a zygote?

Answer 21

A fertilised egg

Question 22

What is the name for the ball of cells that forms when the zygote divides?

Answer 22

An embryo

Question 23

What happens one week after fertilisation?

Answer 23

The embryo implants in the wall of the uterus and the placenta begins to develop.

Question 24

What is a placenta?

Answer 24

The placenta is an organ attached to the wall of the uterus.

Question 25

What is the amniotic sac?

Answer 25

A sac that attaches itself to the placenta which protects the fetus against knocks and bumps.

Question 26

What is an umbilical cord?

Answer 26

A cord that connects the placenta and the fetus

Question 27

What does the placenta do?

Answer 27

It lets the blood of the fetus and mother get close together

Question 28

What passes to the fetus from the mother?

Answer 28

Nutrients and oxygen

Question 29

What passes from the fetus to the mother?

Answer 29

Waste products

Question 30

How long does the menstrual cycle take?

Answer 30

28 days

Question 31

What is the first stage of the menstrual cycle?

Answer 31

Lining of the uterus breaks down.

Question 32

What is the second stage of the menstrual cycle?

Answer 32

Lining of uterus builds up

Question 33

What is the third stage of the menstrual cycle?

Answer 33

Egg is released

Question 34

What is the last stage of the menstrual cycle?

Answer 34

Lining of the uterus is maintained

Question 35

What happens on day 1- 4 of the menstrual cycle?

Answer 35

Lining of the uterus breaks down.

Question 36

What happens on day 4 -14 of the menstrual cycle?

Answer 36

Lining of uterus builds up

Question 37

What happens on day 14 of the menstrual cycle?

Answer 37

Egg is released

Question 38

What happens on day 14 - 28 of the menstrual cycle?

Answer 38

Lining of the uterus is maintained

Question 39

What is the Menstrual cycle for?

Answer 39

Preparing the womb in case it receives a fertilised egg.

Question 40

What does the anther do?

Answer 40

It contains pollen grains which produce the male sex cells

Question 41

What does the filament do?

Answer 41

Supports the anther

Question 42

What are the stamen of the flower?

Answer 42

Anther and filament

Question 43

What are the carpel of the flower?

Answer 43

Stigma, style and ovary

Question 44

What does the stigma do?

Answer 44

Helps to collect pollen as it is sticky and the pollen sticks to it.

Question 45

What does the style do?

Answer 45

Stalk that holds up the stigma

Question 46

What does the ovary do

Answer 46

Contains the female sex cell inside ovules

Question 47

What is Pollination?

Answer 47

Getting pollen to the stigma

Question 48

How does insect pollination work?

Answer 48

Pollen sticks to insects when they land on a flower and they carry it to another flower.

Question 49

How does wind pollination work?

Answer 49

The wind blows pollen from one plant to another?

Question 50

What is fertilisation?

Answer 50

The joining of sex cells

Question 51

How does fertilisation work in a plant.

Answer 51

Pollen grains are brought to a plants stigma and then the plant goes and brings the male gametes to the female gametes

Question 52

What is the first step of fertilisation in a plant?

Answer 52

Pollen grains land on a stigma during pollination

Question 53

What is the second step of fertilisation in a plant?

Answer 53

Pollen tube grows out of pollen grain, down the style and into the ovary

Question 54

What is the third step of fertilisation in a plant?

Answer 54

The nucleus from the male gamete inside the pollen tube moves down the pollen tube

Question 55

What is the final step of fertilisation in a plant?

Answer 55

The male nucleus fuses with the nucleus of a female egg cell inside an ovule.

Question 56

What happens after fertilisation in a plant?

Answer 56

The ovule containing the fertilised egg develops into a seed which grows into a new plant.

Question 57

What is the Explosion way that seeds are dispersed?

Answer 57

The fruit bursts open once it has ripened, scattering the seeds away from the parent plant

Question 58

What is the Drop and Roll way that seeds are dispersed?

Answer 58

Fruit dispersed by drop and roll are normally hard and heavy, they fall from the parent plant and roll away.