Plants

Question 1

Palisade cell definition

Answer 1

Tall cell found in leaves that contains many chloroplasts

Question 2

Root hair cell definition

Answer 2

Cell found in plant roots that has a large surface area to get water out of the ground quickly

Question 3

Stoma

Answer 3

A tiny hole in a leaf through which gases can diffuse into and out of the leaf.

Question 4

Xylem tissue/ vessel

Answer 4

Tube that carries water and dissolved mineral salts in plants.

Question 5

What is a xylem tissue vessel made of

Answer 5

Xylem cells

Question 6

Where are xylem tissues vessels found

Answer 6

It is found in stems and roots

Question 7

What is cellulose?

Answer 7

A strong plant material used to make cell walls

Question 8

What is fat

Answer 8

A substance that is used to store energy

Question 9

What is germination

Answer 9

When a seed starts to grow

Question 10

What is a nitrate

Answer 10

Mineral salt needed by plants to make proteins

Question 11

What are lipids

Answer 11

Fats and oils are a part of a large group of similar substances called lipids

Question 12

What is a polymer

Answer 12

Substance made up of very long molecules containing repeating groups of atoms

Question 13

What is starch

Answer 13

Type of insoluble carbohydrate found in plants. The glucose made in photosynthesis is used to make starch

Question 14

What is Competition

Answer 14

When organisms need the same things as each other.

Question 15

What is cross-breeding

Answer 15

When Sexual reproduction occurs between different varieties or breeds

Question 16

What is decomposer

Answer 16

An organism that feeds on dead organisms or animal wastes, causing them to decay

Question 17

What is fungicide

Answer 17

Pesticide that kills fungicide

Question 18

What is a herbicide

Answer 18

Pesticide that kills plants

Question 19

What is a insecticide

Answer 19

Pesticide that kills insects

Question 20

What is a pest

Answer 20

Any organism that damages a crop

Question 21

What is a pesticides

Answer 21

Chemical substance that kills pests

Question 22

What is selective breeding

Answer 22

When humans choose an organism that has a certain characteristic and breed more of these organisms, making that characteristic more and more obvious

Question 23

What is a selective herbicide

Answer 23

Herbicide that only kills certain types of plants

Question 24

What is variety

Answer 24

Group of plants that has different characteristics

S from other plants from the same species

Question 25

What is yield

Answer 25

The amount of useful product that is obtained from a crop

Question 26

What is aerobic respiration

Answer 26

Plant cells el ease the energy stored in glucose using aerobic respiration

Question 27

What is the word equation for aerobic respiration

Answer 27

Glucose + oxygen --> carbon dioxide + water

Question 28

When does aerobic respiration happen

Answer 28

Aerobic respiration happens all the time

Question 29

When does photosynthesis happen

Answer 29

Photosynthesis can only happen when there is light

Question 30

What is glucose

Answer 30

Type of sugar

Question 31

What is glucose used for (3)

Answer 31

Respiration to release energy Making substances that that act as stores of energy Making new materials for growth

Question 32

When new substances are carried around the plants, through what are they carried

Answer 32

Phloem vessels

Question 33

Why is land cleared of hedges and trees

Answer 33

To create more land or crops and make it easier for machinery to move around

Question 34

What problems does clearing land of hedges and trees cause

Answer 34

Destroy habitats | Lack of roots can cause soil erosion

Question 35

Why are pesticides used

Answer 35

To kill pests that compete with or harm the crops

Question 36

What problems can cause using pesticides

Answer 36

Kill useful organisms | damages food webs

Question 37

Why are fertilisers used

Answer 37

As they contain mineral salts that help plants to grow and increase the yield

Question 38

What problems can fertilisers cause

Answer 38

Can wash into streams and rivers Can cause pollution Organisms in water die

Question 39

Why are varieties used

Answer 39

To Produce the highest yield

Question 40

What problems do varieties cause

Answer 40

Planting of huge areas of a single variety reduces biodiversity

Question 41

What is organic farming

Answer 41

Producing foods without the use of lots of artificial chemical substances

Question 42

What is chlorophyll

Answer 42

Green substance found inside chloroplasts | Traps energy transferred by light

Question 43

What is a chloroplast

Answer 43

Green disc containing chlorophyll found in plant cells | Where plant makes food using photosynthesis

Question 44

What is photosynthesis

Answer 44

Process that plants use to make their food | Needs light to work

Question 45

What is a raw material

Answer 45

Substance used to make other si Substances

Question 46

What is diffusion

Answer 46

When particles spread and mix with each otherwithout anything moving them

Question 47

Word equation for photosynthesis

Answer 47

Carbon dioxide + water --> glucose + oxygen

Question 48

How does the water get water

Answer 48

Water is taken out of the soil by the roots

Question 49

How are roots adapted to their function

Answer 49

Being branched and spread out to help them to absorb water from a large volume of soil Have root hair cells which have a large surface area to help them absorb water quickly Water flows up xylem vessels