Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Biology GCSE AQA > Ecology > Flashcards

Ecology Flashcards

You may prefer our related Brainscape-certified flashcards:
GCSE Religious Studies - Edexcel Route A flashcards GCSE Religious Studies - Eduqas Route A flashcards AP® Biology flashcards GCSE Geography - AQA flashcards Biology 101 flashcards GCSE Religious Studies - Edexcel Route B flashcards GCSE Religious Studies - Eduqas Route B flashcards
1
Q

When levels of carbon dioxide and methane in the atmosphere increase what does that contribute to

A

Global warming

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

How do humans reduce the amount of land available for other animals and plants

A

By building, quarrying, farming and dumping waste

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Pollution kills plants and animals which reduces what

A

Biodiversity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

How can pollution occur

A

In water (Sewage, fertilizer or toxic chemicals)
In air (Smoke and acidic gases)
On land (Landfill and toxic chemicals)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is biodiversity

A

Biodiversity is the variety of all the different species of organisms on earth or within the ecosystem

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Define habitat

A

The habitat is the environment in which an organism lives in

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Define population

A

A population is the total number of organisms of the same species living in the same geographical area

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Define a community

A

A community is the populations of all the different species that live in the same habitat

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What does the word biotic mean

A

Living

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What does the word abiotic mean

A

Nonliving

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Define an ecosystem

A

Ecosystem is both the biotic and abiotic parts of an environment and how they interact

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What do plants compete for

A

Water and mineral ions in the soil
light and for space 

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What do animals compete for

A

Food and water
Mating partners and territory

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What do organisms require to survive and reproduce

A

A supply of materials from their surroundings and from their living organisms

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Within a community what does each species depend on

A

On other species for food, shelter, pollination

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Describe interdependence 

A

All of the different species in a community depend on each other if one species is removed it’s gonna affect the whole community.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Define a stable community

A

A stable community is where all species and environmental factors are in balance so that the population sizes remain fairly constant

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What are the four biotic factors which can affect the community

A

Availability of food
new predators arriving
new pathogens
one species outcompeting another so the numbers are no longer significance to the breed and may become extinct

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

What are the seven abiotic factors which can affect a community

A

Light intensity
temperature
moisture levels
soil pH and mineral contains
wind intensity and direction
carbon dioxide levels for plants
oxygen levels for animals 

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

What is extremophiles

A

Organisms that are adapted to live in extreme conditions For example high temperature, pressure or salt concentration

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

What type of features do organisms have and what do they enable them to do

A

Adaptations. Enable them to survive in their conditions which they normally live in these adaptations may be structural behavioral functional.

22
Q

Name three adaptions

A

Behavioral functional structural

23
Q

What are bacteria living in the deep sea vents called

A

Extremophiles

24
Q

Explain the food chain

A

Produces are eaten by primary consumers which are then eaten by secondary consumers then territory consumers

25
Q

What are consumers that kill and it’s animals called

A

Predators which eat prey

26
Q

What happens in a stable community

A

The number of predators and prey rise and fall in cycles

27
Q

Why are producers important in food chains

A

Because they synthesize complex molecules

28
Q

What do scientists call molecules such as glucose

A

Biomass

29
Q

How does a green plant or alga make glucose

A

By photosynthesis

30
Q

Why are all materials in the living world recycled?

A

To provide the building blocks for the future organisms

31
Q

What does the carbon cycle do

A

Carbon cycle returns carbon from the organisms to the atmosphere as carbon dioxide to be used by plants in photosynthesis

32
Q

What does the water cycle do?

A

The water cycle provides fresh water for plants and animals on land before draining into the seas

33
Q

What does the future of human species on Earth rely on

A

Maintaining a good level of biodiversity

34
Q

What does rapid growth in human population and an increase in the standard of living mean

A

This means more resources are used and more waste is produced unless waist and chemical materials are properly handled more pollution will be caused 

35
Q

What are peats used for

A

To produce cheap compost for gardens and farms and in some countries its burnt to release energy for example to generate electricity 

36
Q

What happens if the decay or burning of the peat gets released 

A

Carbon dioxide is released into the atmosphere this causes climate change

37
Q

What are the advantages and disadvantages of destruction of peat bogs and other areas of peat

A

Advantage:
It’s cheap
Creates garden compost
Cheaper pricing of food

Disadvantage:
Reduces the area of habitat and variety of different plants
Decreases biodiversity (ex. Animals and microorganisms)

38
Q

How is Methane produce

A

By bacteria in Paddy Fields which are used to grow rice
Buy cows when they pass wind

39
Q

What are both carbon dioxide and methane

A

Greenhouse gases (They trap heat in the atmosphere)

40
Q

What is peer review

A

When information discovered is checked by other scientists before publishing

41
Q

What has large scales of deforestation in tropical areas occurred to

A

Provide the land for cattle and rice fields
Grow crops for biofuels 

42
Q

What did scientists and concerned citizens put to Reduce the negative effects

A

They have put in place programs to reduce the negative affects of humans on ecosystems and biodiversity

43
Q

Name decomposers and what they do

A

Bacteria and fungi are decomposers which break down dead organisms in a process called decomposition or rotting

44
Q

What process do decomposers speeds up

A

Decay 

45
Q

What do decomposers produce

A

Enzymes which release into dead matter to digest it

46
Q

What type of traps catch small mammals

A

Pitfall traps

47
Q

What is a transect

A

An imaginary line used as a part of symmetric sampling

48
Q

What does a great bio diversity ensure

A

The stability of ecosystems by reducing one species on another for food shelter and maintenance of the physical environment.

49
Q

What are humans doing to biodiversity

A

Human activities are reducing biodiversity and are trying to stop this reduction

50
Q

What can we learn from fossil fuels

A

How much or how little different organisms have changed as life developed on earth

51
Q

Many early forms of life were soft bodied what does this mean

A

Meaning that they have left few traces behind

Biology GCSE AQA (8 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions