Biomass Flashcards
Compost help growth why (1)
More minerals
Retain water
Contains nutrients
Needed by plants for growth
Why so little mass converted (2)
Waste Respiration Movement Heat Not all eaten Sweating
Source of energy for plants (1)
Radiation from sun
How carbon in dead insect bodies recycled (4)
Plants and algae photo take in Co2
Use carbon to make proteins, fats, carbs
Respire, carbon to carbon dioxide
Animals eat them, some of carbon become part of fats and proteins in their bodies
Respire, C to CO2
Die, microorganisms decompose them
Respire CO2 produced
All energy originally from sun is transferred
Combustion from burning ff and wood produces CO2
Advantage of keeping fish in net (1)
Easier to catch
Feed
Why raise herbivores not carni (2)
Less biomass lost
Shorter food chain
Cheaper feed herbivores
2 ways energy released in respiration used by herbivore (2)
Maintain body temp
Movement breathing
Carni release more energy than herbi why (1)
More movement
Have to hunt
2 carbon compound found in plants (2)
Carbohydrate
Protein
Vitamin
Decay occurs quicker if in container with holes why (2)
Air can enter for aerobic of micro
Heat let out as it kills micro
Proportion of energy in the food transferred into new tissue greater in insect than mammal why (3)
Insect cold blooded
Insect transfer only …kJ mammal …kJ
Less respiration so more biomass available for insect growth
Algae in carbon cycle (3)
Photo (absorb small amount light)
Release CO2
Eaten by animals
Decayed by micro
Why not all sunlight absorbed (2)
Reflected
Photo inefficient
Lost through respiration
One environmental and other factor affect no of pod
Light/water
Genes
Why gardener incorrect when say get largest mass of peas if grow D (1)
Mass of crop also depends on mass of each pea
