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Biology > Ecosystems (paper2) > Flashcards

Ecosystems (paper2) Flashcards

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1
Q

What do organisms need to stay alive

A

Resources

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2
Q

What do plants need to stay alive

A

Light, water, carbon dioxide, oxygen, warmth and mineral ions

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3
Q

What do animals need to stay alive

A

Oxygen, food, water and shelter

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4
Q

Define ecosystem

A

All the organisms and the environment they live in

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5
Q

Define consumer

A

Needs to eat other organisms for energy

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6
Q

Define resource

A

The things that an organism needs to stay live

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7
Q

Define food web

A

Shows the feeding relationship between organisms in a community

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8
Q

Define community

A

All the different organisms that live in an ecosystem

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9
Q

Define abundance

A

How common something is in an area

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10
Q

Define population

A

The number of one type of species

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11
Q

Define producer

A

An organism that produces its own food

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12
Q

Define habitat

A

A place in which an organism lives

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13
Q

Define distribution

A

Where the organisms are found in an ecosystem

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14
Q

Define adaption

A

How the organisms are suited to particular conditions

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15
Q

You can estimate population sizes by doing what with what

A

Taking samples with a quadrat

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16
Q

What is the population size equation

A

Pop size = number if organisms in all quadrants x (total size of area where the organism lives divided by total area of quadrats)

17
Q

What is energy from the sun transferred into through photosynthesis

A

Biomass

18
Q

What is biomass

A

Mass of tissues

19
Q

What is another way that solar energy is transferred

A

Heating during respiration

20
Q

What is another word for a feeding level

A

Trophic levels

21
Q

What is trophic levels

A

The energy flowing through the biotic components of an ecosystem

22
Q

How can we show the amount of biomass at each trophic level

A

With a pyramid of biomass

23
Q

What are non living factors called

A

Abiotic factors

24
Q

The effect of abiotic factors on distribution can be measured using what

A

A belt transect

25
Q

What is measured with a belt transect

A

The abundance of organisms and abiotic factors

26
Q

Changes in abundance can show what

A

Which abiotic factor has the greatest effect on organisms

27
Q

What is drought

A

A lack of water

28
Q

What are substances that can cause harm in the environment

A

Pollutants

29
Q

What do pollutants end up causing

A

Pollution

30
Q

What are biotic factors

A

Organisms in an ecosystem that affect other living organisms

31
Q

Why is Yellowstone Park an ecosystem

A

It’s a huge area of protected land

Biology (10 decks)

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