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 glucose - a simple sugar molecule

Question 3

Photosynthesis

Answer 3

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

Question 4

Starch

Answer 4

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

Question 5

Iodine

Answer 5

orange coloured liquid used to test for starch

Question 6

Chlorophyll

Answer 6

Green pigment in plants used in photosynthesis

Question 7

Cuticle

Answer 7

Waxy, waterproof, protective outer layer of a leaf

Question 8

Epidermis

Answer 8

Single celled thick transparent layer in the upper surface of a leaf

Question 9

Palisade cell

Answer 9

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

Question 10

Spongy cell

Answer 10

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

Question 11

Pore

Answer 11

A very small hole

Question 12

Stomata

Answer 12

Tiny pores on the bottom of a leaf which gasses can move in and out

Question 13

Stoma

Answer 13

A pore on the bottom of a leaf which allows gasses to go in and out

Question 14

Guard cells

Answer 14

Leaf cells either side of the stoma which controls its opening and closing

Question 15

Rate

Answer 15

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

Question 16

Concentration

Answer 16

The number of particles packed in a certain volume

Question 17

Transpiration

Answer 17

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

Question 18

Xylem cells

Answer 18

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

Question 19

Root hair cells

Answer 19

Specialised cells or roots

Question 20

Deficiency

Answer 20

The lack of something

Question 21

Manure

Answer 21

Waste organic material

Question 22

Chemosynthesis

Answer 22

Energy from chemical used to make food

Question 23

Hydrothermal vent

Answer 23

forms on the sea floor where there is volcanic activity