Energy and ecosystems (A-level only) Flashcards
1
Q
How do plants use sugar to photosynthesise?
A
Respiratory substrates to synthesise other biological molecules
e.g. Cellulose
2
Q
Biomass
A
Mass of carbon or dry mass of tissue per given area
3
Q
How can the chemical energy store in dry biomass be calculated?
A
Calorimerty
Energy released = Specific heat capacity of water x Volume of water x Temperature increase of water
4
Q
Gross primary production
A
Chemical energy store in plant biomass, in a given area or volume
5
Q
Net primary production
A
Chemical energy store in plant biomass after respiratory losses to the environment have been taken into account
6
Q
Net production of consumers is calculated as?
A
NPP = GPP - R
