Populations in Ecosystems

Question 1

Ecosystem

Answer 1

all the organisms living in a community plus all the non-living (abiotic) conditions in the area in which they live

Question 2

Population

Answer 2

A group of organisms belong to the same species found in the same area at the same time and potentially able to interbreed

Question 3

Biotic

Answer 3

The living features of an ecosystem
e.g. the presence of predators or food

Question 4

Abiotic

Answer 4

The non-living features of an ecosystem e.g. temperature and the soil

Question 5

Niche

Answer 5

is the role of a species within its habitat e.g. what to eat, when and where it feeds

Question 6

Habit

Answer 6

The environment in which an organism or population of organisms usually lives

Question 7

Community

Answer 7

A group of interacting populations of different species living in the same place at the same time

Question 8

Methods of investigating motile populations

Answer 8

Total Population Size=
No. in 1st sample x No. in 2nd in sample
/No. marked in 2nd sample