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Biology revision Flashcards

1
Q

What is Photosynthesis?

A

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

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2
Q

Why is the process of photosynthesis important?

A

Because without it we wouldn’t be alive.

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3
Q

Where does photosynthesis take place?

A

In leaves in organelles which are called chloroplast.

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4
Q

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

A

In the sunlight

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5
Q

What are ovules in plant reproduction?

A

Where the female gametes are formed.

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6
Q

What are the anthers in plant reproduction?

A

Where pollen grains are produced.

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7
Q

What is the stigma in plant reproduction?

A

Where the pollen grains land during pollination.

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8
Q

What are petals in plant reproduction?

A

A bright flag like feature to attract pollinating insects.

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9
Q

What is the filament in plant reproduction?

A

A thin stalk that supports the anther.

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10
Q

What is the carpel in plant reproduction?

A

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

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11
Q

What is the stamen in plant reproduction?

A

The male sex organ made of the filament and anther.

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12
Q

What is the style in plant reproduction?

A

Connects the stigma to the ovary.

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13
Q

What is the pollen tube in plant reproduction?

A

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

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14
Q

What is Asexual reproduction?

A

Only needs one parents and offspring is identical.

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15
Q

What is sexual reproduction?

A

Needs two parents and offspring are different.

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16
Q

What are gametes?

A

Sex cells

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17
Q

What are the 2 sex cells?

A

The egg and sperm.

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18
Q

What is fertilisation?

A

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

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19
Q

Where does fertilisation occur?

A

In the fallopian tube/oviduct.

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20
Q

What is a foetus?

A

An unborn baby.

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21
Q

Where does the foetus develop?

A

In the womb/uterus.

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22
Q

In a period how often are eggs released.

A

Usually every 28 days.

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23
Q

How long does pregnancy last?

A

40 weeks

24
Q

What is the purpose of the amniotic fluid?

A

To protect and cushion the baby.

25
Q

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

A

The mothers uterus wall contracts.

26
Q

What is the oviduct in human reproduction?

A

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

27
Q

What does the ovary do in human reproduction?

A

It releases the eggs.

28
Q

What does the cervix do in human reproduction?

A

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

29
Q

What is the uterus in human reproduction?

A

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

30
Q

What is the vagina?

A

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

31
Q

What is the penis?

A

It places the sperm into the female.

32
Q

What is the urethra in human reproduction?

A

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

33
Q

What is the sperm duct in human reproduction?

A

A tube which the sperm travels through from the testicles.

34
Q

What are the testes in human reproduction?

A

Where the sperm is produced.

35
Q

What is the scrotum in human reproduction?

A

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

36
Q

What is a gland in human reproduction?

A

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

37
Q

How long is a menstrual cycle?

A

28 days

38
Q

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

A

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

39
Q

What do chromosomes carry?

A

DNA

40
Q

Where do chromosomes come from?

A

Your parents

41
Q

What is an embryo?

A

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

42
Q

Where does the baby get oxygen from?

A

The umbilical cord.

43
Q

What are the different ways seeds are dispersed?

A

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

44
Q

What is gas exchange in plants?

A

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

45
Q

What is gas exchange?

A

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

46
Q

Are respiration and breathing the same?

A

NO

47
Q

What is respiration?

A

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

48
Q

What is anaroebic respiration?

A

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

49
Q

How many chambers does the heart have?

A

4

50
Q

What are the top 2 chambers called?

A

Left and right atrium.

51
Q

What are the bottom 2 chambers called?

A

Left and right ventricle.

52
Q

What do the arteries do?

A

They take blood away from the heart.

53
Q

What do the veins do?

A

Take blood and return it to the heart.

54
Q

What does the right side of the heart do?

A

Receives blood that has no oxygen.

55
Q

What does the left side of the heart do?

A

Pumps blood carrying oxygen to the rest of the body.

56
Q

What does the circulatory system consist of?

A

The heart and blood vessels running through the whole body.

German (7 decks)

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