AQA Biology Paper 2 - Ecosystems

An ecosystem is:

• A.   The interaction between all the living and non-living things in an environment.
• B.   Refers only to the living things in a specific area.
• C.   Refers only to the non-living things in a specific area.
• D.   Where an animal lives.

What equipment is used to estimate the popultion size of plants in an ecosystem?

• A.   A quadrat
• B.   A line transect
• C.   A random sampler
• D.   A rectangle

The ways living organisms interact is called:

• A.   Denaturing
• B.   Competition
• C.   Predator-Prey relationships
• D.   Interdependence

The mean of these numbers: 3, 3, 5, 6 would be:

• A.   4.25
• B.   4.67
• C.   3
• D.   4

Which process releases water vapour to the atmosphere?

• A Transpiration
• B Condensation
• C Precipitation
• D Absorption

An abiotic factor is:

• A.   A non-living organic molecule affecting and ecosystem.
• B.   A non-living factor affecting ecosystems such as sunlight
• C.   A living factor that affects ecosystems such as the number of prey available.
• D.   A living molecule affecting an ecosystem

What is the primary source of energy for all ecosystems?

• A.   Plants
• B.   The sun
• C.   Chemicals
• D.   Water

Animals compete for:

• A.   Food only
• B.   Food and mates.
• C.   Food, mates and territory.
• D.   Food, mates, territory and oxygen

Organisms that survive in extreme conditions are called:

• A.   Hardophiles
• B.   Extremophiles
• C.   Non-living
• D.   Thermochromatic

An example of an extreme environment would be:

• A.   The sun
• B.   Deep sea vents
• C.   Sewer systems
• D.   The human stomach