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Biology GCSE > Topic 9 > Flashcards

Topic 9 Flashcards

1
Q

Organism

A

Single living individual

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2
Q

Population

A

Organisms of the same species in an area

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3
Q

Community

A

All the populations in an area

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4
Q

Ecosystem

A

Community and non living components in an area

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5
Q

In an ecosystem, all organisms are

A

Dependant on each other

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6
Q

Biotic factors affecting distribution

A

Prey
Competitor
Predator

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7
Q

Abiotic factors affecting distribution

A 
Light
Temp
Rain
Oxygen
Pollution
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8
Q

Examples of interdependence

A

Parasitism

Mutualism

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9
Q

What is interdependence

A

Survival of one species is closely linked with another

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10
Q

Examples of parasites

A

Flea
Head louse
Tapeworm
Mistletoe

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11
Q

What is mutualism

A

When interdependence benefits both organism

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12
Q

Example of mutualism

A

Large fish lose dead skin
Eaten by small fish

Nitrogen fixing bacteria get food from plant
Plants get nitrogen compound for healthy growth

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13
Q

Sampling examples

A

Random

Belt transect

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14
Q

Eutrophication

A

Hellahfhav

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15
Q

Indicator species

A

Asses levels of pollution

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16
Q

What grows on trees when there is air pollution

A

Lichens

17
Q

What fungus stops growing on roses when air pollution

A

Black spot

18
Q

What live in water with little oxygen

A

Bloodworms

Sludgeworms

19
Q

What lives in water with lots of oxygen

A

Stonefly larvae
Mayflies
Caddisflies

20
Q

What is decay

A

Break down of materials by microorganisms

21
Q

Controls of decay

A

Temp

Water and oxygen availability

Biology GCSE (8 decks)

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