Organisms & Environment Flashcards

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1
Q

Food chain

A

A diagram showing the transfer of energy from one organism to the next starting with a producer.

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2
Q

Food web

A

A network of interconnected food chains

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3
Q

Producer

A

An organism that makes its own organic nutrients using energy from the sunlight by photo synthesis

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4
Q

Consumer

A

An organism that gains its energy by feeding on other organisms

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5
Q

Herbivore

A

An organism that gains its energy from eating plants

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6
Q

Carnivore

A

An organism that gets its energy from eating animals

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7
Q

Decomposer

A

An organism that gets its energy from dead or waste organic material

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8
Q

Trophic level

A

The position of an organism in a food chain, food web, pyramid of biomass or pyramid of numbers.

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9
Q

Why does the energy level decrease with a higher trophic level?

A
  • Respiration in organism breaks down organic nutrients
  • Energy is wated in the form of heat
  • Not all parts of the organism are eaten
  • Some energy passes of of the animal in faeces
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10
Q

What is the efficiency between trophic levels?

A

10%

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11
Q

The more energy in a trophic level…

A

The more organisms exist on that trophic level

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12
Q

Pyramid of number

A

Each level shows the number of organisms on that trophic level.

The bigger to size of the bar the more organisms are represented.

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13
Q

Pyramids of biomass

A

Each bar represents the mass of organisms on each trophic level.

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14
Q

What is transferred in the food chain

A

Energy and sustances

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15
Q
A
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16
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17
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18
Q
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