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productivity Flashcards

(17 cards)

1
Q

what is glucose used for (6)

A

converted into insoluble starch
makes lipids for storage
converted into amino acids to make protein
makes cellulose
used for respiration

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2
Q

productivity in plants

A

NPP = GPP - R
[energy absorbed - respiratory losses]

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3
Q

productivity in animals

A

N = I - (F + R)
[energy ingested - (energy in faeces + respiratory losses)]

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4
Q

how does mycorrhizal fungi help

A

increased resistance to foliar pathogens
resistance to root pathogens
increased drought tolerance
increased salt tolerance
better nutrient transfer

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5
Q

ammonification

A

microbial saprobiants decompose dead plant and animal materials forming ammonium ion

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6
Q

nitrogen fixation

A

nitrogen fixing bacteria reduce nitrogen gas to ammonium. nitrogen fixing bacteria are found in root nodules of leguminous plants

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7
Q

nitrification

A

nitrifying bacteria oxidise ammonium to nitrate ions then nitrite ions then nitrate ions to be taken up by plants

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8
Q

efficiency equation

A

energy stored in biomass
total energy taken in

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9
Q

artificial fertiliser

A

NPK

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10
Q

natural fertiliser

A

manure
slurry
guano

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11
Q

geographical isolation

A

allopatric speciation

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12
Q

reproductive speciation

A

sympatric speciation

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13
Q

sampling motile species eq

A

1st sample x 2nd sample
2nd sample previously marked

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14
Q

detritus

A

dead plant and animal material

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15
Q

detrivore

A

an organism that feeds on detritus

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16
Q

Units for gross productivity

A

kJ per hector per year