Biology revision

Question 1

What is Photosynthesis?

Answer 1

The process of which plants store energy of sunlight in sugar.

Question 2

Why is the process of photosynthesis important?

Answer 2

Because without it we wouldn’t be alive.

Question 3

Where does photosynthesis take place?

Answer 3

In leaves in organelles which are called chloroplast.

Question 4

Where do leaves need to be in order to be in the sight of photosynthesis?

Answer 4

In the sunlight

Question 5

What are ovules in plant reproduction?

Answer 5

Where the female gametes are formed.

Question 6

What are the anthers in plant reproduction?

Answer 6

Where pollen grains are produced.

Question 7

What is the stigma in plant reproduction?

Answer 7

Where the pollen grains land during pollination.

Question 8

What are petals in plant reproduction?

Answer 8

A bright flag like feature to attract pollinating insects.

Question 9

What is the filament in plant reproduction?

Answer 9

A thin stalk that supports the anther.

Question 10

What is the carpel in plant reproduction?

Answer 10

Female sex organ made of the stigma, style and ovary.

Question 11

What is the stamen in plant reproduction?

Answer 11

The male sex organ made of the filament and anther.

Question 12

What is the style in plant reproduction?

Answer 12

Connects the stigma to the ovary.

Question 13

What is the pollen tube in plant reproduction?

Answer 13

Grows out of the pollen grain and into the stigma carrying the pollen nucleus down to the egg cell.

Question 14

What is Asexual reproduction?

Answer 14

Only needs one parents and offspring is identical.

Question 15

What is sexual reproduction?

Answer 15

Needs two parents and offspring are different.

Question 16

What are gametes?

Answer 16

Sex cells

Question 17

What are the 2 sex cells?

Answer 17

The egg and sperm.

Question 18

What is fertilisation?

Answer 18

When the egg and sperm cell fuse to become an embryo.

Question 19

Where does fertilisation occur?

Answer 19

In the fallopian tube/oviduct.

Question 20

What is a foetus?

Answer 20

An unborn baby.

Question 21

Where does the foetus develop?

Answer 21

In the womb/uterus.

Question 22

In a period how often are eggs released.

Answer 22

Usually every 28 days.

Question 23

How long does pregnancy last?

Answer 23

40 weeks

Question 24

What is the purpose of the amniotic fluid?

Answer 24

To protect and cushion the baby.

Question 25

What happens when the baby is pushed out of the mothers body?

Answer 25

The mothers uterus wall contracts.

Question 26

What is the oviduct in human reproduction?

Answer 26

A tube that the egg travels down to get to the womb.

Question 27

What does the ovary do in human reproduction?

Answer 27

It releases the eggs.

Question 28

What does the cervix do in human reproduction?

Answer 28

It holds the foetus in place if the egg has been fertilised. It’s a muscle that closes the top of the vagina.

Question 29

What is the uterus in human reproduction?

Answer 29

It is where the fertilised egg would implant and develop into a foetus.

Question 30

What is the vagina?

Answer 30

A muscular tube in the outside if the body where sperm is deposited.

Question 31

What is the penis?

Answer 31

It places the sperm into the female.

Question 32

What is the urethra in human reproduction?

Answer 32

Joins to the sperm duct and sperm and urine leave the penis through this.

Question 33

What is the sperm duct in human reproduction?

Answer 33

A tube which the sperm travels through from the testicles.

Question 34

What are the testes in human reproduction?

Answer 34

Where the sperm is produced.

Question 35

What is the scrotum in human reproduction?

Answer 35

The skin surrounding the testes holding them outside of the body to keep sperm at the correct temp.

Question 36

What is a gland in human reproduction?

Answer 36

These create a liquid to add to the sperm. The sperm and liquid together is called semen.

Question 37

How long is a menstrual cycle?

Answer 37

28 days

Question 38

What happens to the lining of the uterus if the egg isn’t fertilised.

Answer 38

The uterus lining breaks down and is released from the vagina as blood.

Question 39

What do chromosomes carry?

Answer 39

DNA

Question 40

Where do chromosomes come from?

Answer 40

Your parents

Question 41

What is an embryo?

Answer 41

An early stage of development in a multicellular organism following fertilisation.

Question 42

Where does the baby get oxygen from?

Answer 42

The umbilical cord.

Question 43

What are the different ways seeds are dispersed?

Answer 43

Wind, water, animals eat them and dome out as faeces, animals catch them in fur, exploding and scattering.

Question 44

What is gas exchange in plants?

Answer 44

The process by which the plants take in carbon dioxide and release oxygen through tiny pores called stomata.

Question 45

What is gas exchange?

Answer 45

A process which involves the swapping of gases that occurs at exchange surfaces, it absorbs oxygen into the blood and removes carbon dioxide.

Question 46

Are respiration and breathing the same?

Answer 46

NO

Question 47

What is respiration?

Answer 47

A chemical reaction which occurs in all living cells releasing energy from glucose.

Question 48

What is anaroebic respiration?

Answer 48

It doesn’t require oxygen and partially breaks down glucose.

Question 49

How many chambers does the heart have?

Answer 49

4

Question 50

What are the top 2 chambers called?

Answer 50

Left and right atrium.

Question 51

What are the bottom 2 chambers called?

Answer 51

Left and right ventricle.

Question 52

What do the arteries do?

Answer 52

They take blood away from the heart.

Question 53

What do the veins do?

Answer 53

Take blood and return it to the heart.

Question 54

What does the right side of the heart do?

Answer 54

Receives blood that has no oxygen.

Question 55

What does the left side of the heart do?

Answer 55

Pumps blood carrying oxygen to the rest of the body.

Question 56

What does the circulatory system consist of?

Answer 56

The heart and blood vessels running through the whole body.