Organisation of an Ecosystem

Question 1

the energy for all food chains comes from

Answer 1

sun

Question 2

ecosystem

Answer 2

interaction between a community of living organisms and their environment.

Question 3

community

Answer 3

2 or more populations of organisms

Question 4

population

Answer 4

A group of individuals that belong to the same species and live in the same area

Question 5

producer

Answer 5

An organism that can make its own food / plants and algae, which photosynthesise.

Question 6

primary consumer

Answer 6

herbivores, which directly eat producers for energy

Question 7

secondary consumer

Answer 7

carnivores, which directly eat primary consumers for energy

Question 8

tertiary consumer

Answer 8

carnivores. They eat secondary consumers for energy

Question 9

interdependence

Answer 9

very small changes to ecosystems have large consequences, which can be difficult to predict. all the organisms in an ecosystem are dependent upon each other.

Question 10

competition

Answer 10

plants compete for light, space, water and minerals from the soil. Animals compete for food, mates and their territory. Organisms which have more of these resources tend to grow more healthily and are more likely to have offspring.

Question 11

interspecific competition

Answer 11

competition between members of different species

Question 12

intraspecific competition

Answer 12

competition between members of the same species

Question 13

stable community

Answer 13

Where all the species and environmental factors are in balance so that population sizes remain fairly constant