B3.2

Question 1

Adrenaline

Answer 1

hormone released during stress. It causes changes which make the body ready for action

Question 2

Auxin

Answer 2

plant hormone responsible for growth through cell elongation

Question 3

Contraception

Answer 3

technique used to prevent pregnancy

Question 4

Endocrine gland

Answer 4

gland which produces and secretes a hormone

Question 5

Endocrine system

Answer 5

all the endocrine glands and the hormones they produce

Question 6

Ethene

Answer 6

plant hormone that causes plant fruits to ripen by stimulating the conversion of starch into sugar

Question 7

fertility treatment

Answer 7

technique used to increase a woman’s chance of getting pregnant

Question 8

FSH

Answer 8

Follicle stimulating hormone - female hormone that causes an egg to mature and stimulate the ovaries to produce oestrogen

Question 9

Gibberellins

Answer 9

plant hormones that promote growth (particularly stem elongation) and end the dormancy period of seeds and
buds

Question 10

Gravitropism

Answer 10

growth in response to gravity (also known as geotropism)

Question 11

Homeostasis

Answer 11

maintenance of a constant internal environment

Question 12

Hormone

Answer 12

chemical messenger which travels in the blood

Question 13

luteinising hormone (LH)

Answer 13

female hormone which triggers ovulation

Question 14

negative feedback

Answer 14

a system that detects a change in a condition. The system then acts to return conditions to the desired level

Question 15

Oestrogen

Answer 15

female hormone that causes the lining of the uterus to build up

Question 16

Ovulation

Answer 16

release of a mature egg from an ovary

Question 17

Period

Answer 17

Loss of uterus lining

Question 18

Phototropism

Answer 18

Growth in response to light

Question 19

Progesterone

Answer 19

female hormone that maintains the uterus lining

Question 20

Target organ

Answer 20

Organ a hormone has an effect on

Question 21

Thyroxine

Answer 21

Hormone that controls metabolism

Question 22

Tropism

Answer 22

Growth in response to an external stimulus

Question 23

How is the brain involved in Homeostasis?

Answer 23

Coordinates response to external and internal stimuli

Question 24

How are the lungs involved in Homeostasis?

Answer 24

Control amount of o2 and co2 in blood

Question 25

How are the muscles involved in Homeostasis?

Answer 25

Can respond to environment (external), blood sugar level (internal)

Question 26

How is the skin involved in Homeostasis?

Answer 26

Can control temperature and sense external environment (internal and external)

Question 27

How is the pancreas involved in Homeostasis?

Answer 27

Can increase / decrease amount of glucose in blood (internal)

Question 28

How are the kidneys involved in Homeostasis?

Answer 28

Can control amount of water in blood (internal)

Question 29

How do thyroid hormones influence the metabolic rate ? (2)

Answer 29

- by stimulating almost every tissue in the body to produce proteins - by increasing the amount of oxygen that cells use

Question 30

Uterine lining

Answer 30

Builds up each month to prepare for a fertilised egg

Question 31

Fimbriae

Answer 31

Catch the released egg and move it down the fallopian tubes

Question 32

Cervix

Answer 32

Directs sperm into the uterus, allows flow of menstrual blood from uterus to vagina, and closes the entrance to uterus during pregnancy

Question 33

Vagina

Answer 33

Receives the penis during intercourses, acts as a birth canal during birth

Question 34

Uterus

Answer 34

Nurturing the fertilised ovum as it develops into a foetus until birth, muscular organ that contracts during childbirth

Question 35

Ovary

Answer 35

Contains the eggs which a female is born with, gland with secretes oestrogen and progesterone

Question 36

Uterine wall

Answer 36

Muscular wall to help push the baby out during childbirth

Question 37

Fallopian tube

Answer 37

Transports egg from ovary to uterus each month

Question 38

When does menstruation occur?

Answer 38

Between day 1 and 4

Question 39

When does the lining of the uterus build up?

Answer 39

Between day 4 and 14

Question 40

When is the lining maintained

Answer 40

Between day 14 and 28

Question 41

When does the lining of the uterus break down

Answer 41

Day 28

Question 42

Shoots are ….. phototropic and …….. gravitropic

Answer 42

Positively Negatively

Question 43

Roots are ….. phototropic and …….. gravitropic

Answer 43

Negatively Positively

Question 44

Which plant hormone is used to grow cuttings?

Answer 44

Rooting powder containing auxin stimulate root growth

Question 45

Which plant hormone is used in tissue culture?

Answer 45

Auxin is added to induce the cluster to develop a shoot and root

Question 46

Which plant hormone is used to kill weeds?

Answer 46

Auxin is used to grow the weeds too quickly so they are unable to sustain the high growth rate, causing them to die

Question 47

Which plant hormone is used to ripen fruit

Answer 47

Ethene is sprayed on the fruit to encourage it to ripen

Question 48

Which plant hormone is used to control seed dormancy?

Answer 48

Gibberellins

Question 49

Which plant hormone is used to grow seedless fruit?

Answer 49

Gibberellins can be sprayed to stimulate fruit growth

Question 50

What hormone stimulates the ovaries to produce oestrogen ?

Answer 50

FSH stimulates the ovaries to produce oestrogen FSH

Question 51

What happens as oestrogen levels rise?

Answer 51

As oestrogen levels rise they inhibit FSH, prevents more than one egg maturing

Question 52

What does oestrogen stimulate?

Answer 52

The pituitary gland to release LH

Question 53

What inhibits LH?

Answer 53

Progesterone