Ecosystems Flashcards

(26 cards)

1
Q

What is a species and what can they do?

A

Group of organisms which breed to produce fertile offspring

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2
Q

What is a population?

A

Number of individuals of same species in an area

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3
Q

What is a habitat?

A

Place organism lives

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4
Q

What is a community?

A

All organisms in an area

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5
Q

What is an ecosystem?

A

All living organisms in area
And all non-living components they interact with

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6
Q

What does communities + habitat equal?

A

Ecosystem

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7
Q

What is a biodiversity?

A

Range of species which live in ecosystem

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8
Q

What is a niche?

A

Role organism plays in environment

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9
Q

What does a food chain show?

A

feeding relationship between different organisms
Grass > Grasshopper > Starling

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10
Q

What do the arrows in a food chain represent?

A

Direction of energy flow

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11
Q

What do all food chains begin with?

A

Producer

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12
Q

What do food webs show?

A

Several food chains joined together

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13
Q

What is a predator?

A

Organism which eats other animals

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14
Q

What is prey?

A

Organism which is eaten by other animals

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15
Q

What is a herbivore?

A

Animal which only eats plants

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16
Q

What is a carnivore?

A

Animal which only eats other animals

17
Q

What is an omnivore?

A

Animal which eats both plant/animal material

18
Q

What happens when population of species in food chain changes?

A

Knock on impact on other species

19
Q

What happens if population is reduced or completely removed?

A

Population predators decrease
Population prey increase
Population competition increase

20
Q

When does competition occur?

A

When resources limited

21
Q

What type of resources do organisms compete for?

A

Food
Water
Space
Mates

22
Q

What are the two different types of competition?

A

Intraspecific and Interspecific

23
Q

Where does intraspecific competition occur?

A

Members of same species

24
Q

Where does interspecific competition occur?

A

Members of different species

25
Which competition is more intense? Interspecific or Intraspecific?
Intraspecific
26
Why is Intraspecific competition more intense?
Resources competed for are same