Ecology Test Flashcards

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1
Q

What is a community?

A

All the living organisms in an ecosystem

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2
Q

What is an ecosystem?

A

All the living and non living things in the area

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3
Q

True or False: Energy moves in numerous directions throughout an ecosystem?

A

False

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4
Q

What is carrying capacity?

A

The point at which the population of an organism has reached the maximum size that an ecosystem can support

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5
Q

What is a niche?

A

The specific area that an organism fits into its ecosystem, including feeding and living and everything about the animals lifestyle

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6
Q

True or False: Ecosystems usually have more secondary consumers than primary consumers?

A

False

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7
Q

True or False: Biomass is highest at the bottom of the trophic pyramid?

A

True

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8
Q

True or False: Carrying capacity is reached when predators are removed from the ecosystem?

A

False

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9
Q

What is a population?

A

All the individuals of one species only in an ecosystem

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10
Q

What increases a population

A

Immigration, birth rate

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11
Q

When plants convert light energy into chemical energy, what process are they performing?

A

Photosynthesis

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12
Q

What is the cycle that involves carbon dioxide being released by organism and then being used by plants?

A

Carbon Cycle

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13
Q

An organisms niche includes…?

A

where it lives, what it eats, what eats it and the relationships it has

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14
Q

How does Nitrogen get back into the atmosphere during the nitrogen cycle?

A

By denitrifying bacteria

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15
Q

What decreases Population

A

Emigration, and Mortality (death) rate

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16
Q

What turns nitrogen into a form usable by plants and animals?

A

Bacteria

17
Q

What is a way we could become more sustainable?

A

Reduce, Reuse, Recycle, and walk and bike more often

18
Q

Why is the sun important part of an ecosystem?

A

it provides energy for all organisms on the planet

19
Q

since resources are not unlimited an organism must do what to get them?

A

Compete

20
Q

Predation

A

a relation between animals in which one organism captures and feeds others

21
Q

Symbiosis

A

the close relationship between two species that benefits at least one of the species

22
Q

Mutualism

A

a relationship between two species of organism in which both benefit from the association

23
Q

Commensalism

A

a type of relationship between two species of a plant, animal, fungus, etc. in which one lives with, on, or in another without damage to either

24
Q

Parasitism

A

a relation between organism in which one lives as a parasite on another