B17:OrgansingAnEcosystem

Question 1

what are the producers of biomass

Answer 1

photosynthetic organisms

Question 2

examples of photosynthetic organisms

Answer 2

green plants and algae

Question 3

what can feeding relationships be represented by

Answer 3

food chains

Question 4

what do all food chains start with

Answer 4

producer

Question 5

what consumes the producer

Answer 5

primary consumer

Question 6

what consumes the primary consumer

Answer 6

secondary consumer

Question 7

what consumes the secondary consumer

Answer 7

tertiary consumer

Question 8

what are consumers known as

Answer 8

predators

Question 9

what are the animals being consumed known as

Answer 9

prey

Question 10

what happens to the number of predators and prey in a stable community

Answer 10

rise and fall in cycle

Question 11

what materials are constantly recycled to provide resources for organisms

Answer 11

water and carbon

Question 12

decay definition

Answer 12

rot or decompose through the action of bacteria and fungi

Question 13

in decay where do mineral ions return to

Answer 13

the soil

Question 14

what does the water cycle show

Answer 14

how freshwater is available for plants and animals on land before draining into the sea

Question 15

describe how the mineral ions in a cow’s muscles were once part of a bird

Answer 15

when the bird dies it will have decayed and the minerals will have returned to the soil. The grass will grow on this soil and cows will consume the grass and the minerals will be consumed and stored in the cow’s muscles

Question 16

explain the role of decomposers in an ecosystem

Answer 16

decomposers break down the waste of dead animals and plants

Question 17

transpiration

Answer 17

water evaporated from trees

Question 18

precipitation examples

Answer 18

rain, sleet, snow

Question 19

how is carbon recycled

Answer 19

through the carbon cycle

Question 20

what processes return carbon back to the atmosphere

Answer 20

burning of fossil fuels, respiration, the decomposition of dead plants and animals

Question 21

what form does carbon dioxide return into the atmosphere

Answer 21

as carbon dioxide gas

Question 22

glucose+oxygen->carbon dioxide+water

Answer 22

respiration

Question 23

carbon dioxide+water->glucsoe and oxygen

Answer 23

photosynthesis

Question 24

how carbon is passed from plants to animals

Answer 24

eating

Question 25

burning of fuels which release carbon into the air

Answer 25

combustion

Question 26

what factors affect the rate of decay

Answer 26

temperature, oxygen gas availability, moisture levels

Question 27

what conditions do gardeners try to provide for rapid decay of organic matter

Answer 27

optimum

Question 28

what is produced as a natural fertiliser

Answer 28

compost

Question 29

what type of decay produces methane gas

Answer 29

anaerobic

Question 30

what generators are used to produce methane gas

Answer 30

biogas

Question 31

what do biogas generators do

Answer 31

produce methane gas

Question 32

what is methane gas used for

Answer 32

a fuel

Question 33

why does the gardener want to make compost

Answer 33

as it is a cheap natural fertiliser