B7: Ecology (triple)

Question 1

What is the definition of community?

Answer 1

The populations of different species living in a habitat.

Question 2

What are abiotic factors?

Answer 2

Non-living factors of the environment (temperature)

Question 3

What are biotic factors?

Answer 3

Linking factors of the environment (food)

Question 4

What is the definition of ecosystem?

Answer 4

The interaction of a community of living organisms and non-living parts of their environment

Question 5

What do animals and plants compete for?

Answer 5

Light space water mineral ions

Space food water mates

Question 6

What is interdependence?

Answer 6

The dependency on other species for food, shelter, pollination and seed disposal.

Question 7

What are the 3 main types of adaptations in organisms?

Answer 7

Structural
Behavioural
Functional

Question 8

What are quadrants used for?

Answer 8

To study the distribution of small organisms

Question 9

What are transacts used for?

Answer 9

Studying the distribution of organisms along a line

Question 10

Describe the water cycle.

Answer 10

Water evaporates form the land or the sea and plants.
Warm water vapour travels upwards.
Cools can condenses into clouds.
Water falls from the clouds as precipitation providing fresh water to plants and animals.
Some water gets absorbed and used by animals and plants.
Unabsorbed water runs off into streams land rivers.

Question 11

Describe the carbon cycle.

Answer 11

CO2 is used by plants and algae.
Some CO2 is released by plants and algae during respiration.
When plants and algae are consumed their carbon store is passed up the food chain.
Animals respire releasing CO2 .
Dead animals, plants and algae are consumed by other detritus feeders and microorganisms. These organisms respire.
Animals produce waste which detritus feeders and microorganisms break down.
Combusting wood and fossil fuels releases CO2.

Question 12

What problems are caused by deforestation?

Answer 12

Less CO2 is taken in
More CO2 in atmosphere
Less biodiversity

Question 13

What 3 environmental conditions can affect the distribution of organisms?

Answer 13

temperature
water availability
composition f atmospheric gases

Question 14

What 4 factors determine the rate of decay?

Answer 14

temperature
water availability
oxygen availability
number of decay organisms

Question 15

How is bio gas created?

Answer 15

anaerobic decay of waste material.

Question 16

What is biogas mainly made up of?

Answer 16

methane

Question 17

Producers fall into which trophic level?

Answer 17

1

Question 18

Primary consumers fall into which trophic level?

Answer 18

2

Question 19

Secondary consumers fall into which trophic level?

Answer 19

3

Question 20

Tertiary consumers fall into which trophic level?

Answer 20

4