Plants

Question 1

Carbon dioxide

Answer 1

the gas in the air used by plants to make food. It is produced during respiration, by burning fossil fuels or by acids reacting with metal carbonates

Question 2

oxygen

Answer 2

a gas in the air that is produced by plants, used during aerobic respiration and during combustion reactions

Question 3

Glucose

Answer 3

A simple sugar molecule

Question 4

Photosynthesis

Answer 4

the process by which energy from sunlight, carbon dioxide and water are used by green plants to produce glucose and oxygen

Question 5

Starch

Answer 5

A large molecule made by plants as a form of food storage

Question 6

Iodine

Answer 6

Orange large coloured liquid used to test for starch

Question 7

Chlorophyll

Answer 7

Green pigment in plants used in photosynthesis

Question 8

Cuticle

Answer 8

Waxy, waterproof, protective outer layer of a leaf

Question 9

Epidermis

Answer 9

Single-cell thick transparent layer in the upper surface of a leaf

Question 10

Palisade cell

Answer 10

A long narrow plant cell, packed with chloroplasts and found in the upper part of the leaf

Question 11

Spongy cell

Answer 11

a plant cell with a large surface area, large spaces around it and found in the lower part of the leaf

Question 12

Pore

Answer 12

a very small hole

Question 13

Stomata

Answer 13

Tiny pores on the underneath surface of the leaf through which gases can move in and out

Question 14

Stoma

Answer 14

tiny pore on the underneath surface of a leaf through which gases can move in and out

Question 15

Guard cells

Answer 15

Leaf that either side of each stoma which control its opening and closing

Question 16

Rate

Answer 16

A measure of speed or the number of times something happens in a set amount of time

Question 17

Concentration

Answer 17

The number of particles packed in a certain volume

Question 18

Transpiration

Answer 18

Movement of water in plants as it is taken up through the root and released from the leaves as water vapour

Question 19

Xylem cells

Answer 19

Cells that join to form a pipeline in the stem of the plant through which water and minerals travel

Question 20

Root hair cells

Answer 20

Specialised plant cells on roots

Question 21

Deficiency

Answer 21

Lack of something such as a nutrient

Question 22

Fertiliser

Answer 22

chemical put on soil to increase soil fertility and allow better growth of crop plants

Question 23

Manure

Answer 23

Waste organic material

Question 24

Chemosynthesis

Answer 24

Energy from chemicals is used to make food

Question 25

Hydrothermal vent

Answer 25

forms on the sea floor where there is volcanic activity