energy transfer and productivity Flashcards

1
Q

why cant plants absorb all sunlight

A

light misses the chlorophyll molecule

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2
Q

what is NPP

A

the potential food availible to consume in the eco system

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3
Q

how much energy typically transfers through the tropic levels

A

10%

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4
Q

why does not all the energy pass from one trophic level to another

A

some is lost as heat through respiration

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5
Q

what is GPP

A

total chemical energy in a plants biomass in a given area

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6
Q

what is GPP in relation to trophic levels

A

the amount of energy avalible for the next trophic level to consume

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7
Q

give three ways of which energy is lost

A

through heat from respiration
through urine
through not digesting the bones and fur

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8
Q

what is the equation for the NET production of consumers

A

n=I-(F+R)

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9
Q

what is secondary production

A

the rate at which energy is used to make new organic molecules within heterotrophs

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10
Q

what is the equation for efficancy

A

energy available after transfer/energy avalible before transfer x100

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11
Q

in the equation for the NET production of consumers what does I stand for

A

chemical energy of ingested food

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12
Q

in the equation for the NET production of consumers what does F stand for

A

lost faeces and urine

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13
Q

in the equation for the NET production of consumers what does R stand for

A

lost in respiration

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