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Science > Food Webs And Ecological Pyramids > Flashcards

Food Webs And Ecological Pyramids Flashcards

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Biology 101 flashcards
1
Q

What is: the role of a species within an ecosystem?

A

Ecological niche

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2
Q

What is a key feature of an ecosystem?

A

The feeding roll of each species

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3
Q

What is: an animal that eats plants or other producers?

A

Herbivore

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4
Q

What is: an animal that eats other animals?

A

Carnivore

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5
Q

What is: an animal that eats both plants and animals?

A

Omnivore

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6
Q

What is: an animal that feeds on the remains of other organisms?

A

Scavenger/Detrivore

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7
Q

What do food chains illustrate?

A

Who eats whom in an ecosystem

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8
Q

What do food chains show?

A

How energy passes through an ecosystem

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9
Q

What helps describe the position of an organism along a food chain?

A

Trophic level/feeding level

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10
Q

Who occupies the first trophic level?

A

Producers

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11
Q

Who occupies the second trophic level?

A

Herbivores

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12
Q

Who occupies the third and fourth trophic levels?

A

Carnivores

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13
Q

What does a food web show?

A

A series of interconnecting food chains

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14
Q

What are food webs useful to figure out?

A

What might happen when a species is removed from or added to an ecosystem

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15
Q

What displays relationships between trophic levels in an ecosystem?

A

Ecological pyramids

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16
Q

What illustrates energy loss and transfer between trophic levels?

A

Energy Pyramids

17
Q

What does the size of each layer in the energy pyramid represent?

A

The amount of energy available at that trophic level

18
Q

Why are populations in the highest trophic levels much smaller than species lower in the food chain?

A

Because species in the highest trophic levels have less energy available to them that species near the bottom (fewer predators than herbivores)

19
Q

What is the total mass of all living organisms in a given area?

A

Biomass

20
Q

What shows the number of individuals of all populations in each trophic level?

A

Pyramid of numbers

Science (39 decks)

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