Ecosystems

Question 1

abitoic environment

Answer 1

things like sunlight, wind, air composition, temperature, minerals, water

Question 2

biotic environment

Answer 2

things like producers, consumers, decomposers, competition, predation

Question 3

population

Answer 3

all of the organisms of a particular species found in an ecosystem

Question 4

community

Answer 4

all different species living in an ecosystem

Question 5

producer

Answer 5

organism in an ecosystem that can make their own food through photosynthesis

Question 6

decomposer

Answer 6

organism that can decompose (break down) organic material

Question 7

detritivore

Answer 7

organism that feeds on decaying organic material

Question 8

at trophic level one what is the name of this organism

Answer 8

producer

Question 9

pyramids of numbers

Answer 9

represents the number of organisms in each trophic level in a food chain (irrespective of their mass)

Question 10

pyramids of biomass

Answer 10

represents the total mass of the organisms in each trophic level (irrespective of their number)

Question 11

quadrat

Answer 11

a square frame with a measured grid of wire within it used for systematic sampling of organisms

Question 12

you can label all organisms (except producers) with..

Answer 12

a trophic level, consumer level, what sort of things they eat, prey or predator

Question 13

pyramids of numbers should be

Answer 13

to scale 1= 1 square and label the bars

Question 14

how is energy lost at each stage of the food chain

Answer 14

• not all of the organism is eaten
• not all of the organism is digested/absorbed
• some of the energy is lost in respiration to release energy e.g. movement and heat
• some energy is used for growth and reproduction

Question 15

chlorophyll does what

Answer 15

absorbs light for photosynthesis creating a green colour on a plant

Question 16

different plants can absorb light at

Answer 16

different wavelengths