Aqa Biol4 1.1 - Populations And Ecosystems

Front 1

What is an ecosystem?

Back 1

A more or less self-contained functional unit in ecology made up of all the interacting biotic and abiotic factors in a specific area

Front 2

What is a population?

Back 2

A group of individuals of the same species that occupy the same habitat at the same time. Populations of different species form a community

Front 3

What is a community?

Back 3

The organisms of all species that live in the same area.

Front 4

What is a habitat?

Back 4

The place where an organism normally lives, which is characterised by physical conditions and the species of other organisms present.

Front 5

What is an ecological niche?

Back 5

All conditions and resources required for an organism to survive, reproduce and maintain a viable population.

Front 6

What are the two major process in an ecosystem?

Back 6

Flow of energy through the system

Cycling of elements within the system

Front 7

There is exchange between other ecosystems T/F

Back 7

F

Front 8

Why are the boundaries of a population difficult to define?

Back 8

Woodlice on a decaying log could breed with woodlice on a similar log in same ecosystem 1 km away, but in practice not likely - therefore considered separate populations but the boundary is unclear

Front 9

Where do populations occur?

Back 9

In different habitats of an ecosystem

e.g. populations of nettles, worms, woodpeckers

Front 10

Many species can occupy the same niche T/F

Back 10

F