CHAPTER 21 NOTES 0.0 / 5 ? BiologyMovement of energy and matter in ecosystemsAll LevelsAll boards Created by: ALK756Created on: 18-10-15 21:55 What percent of light energy is used in photosynthesis? only 1% of light energy is used 1 of 9 What is primary productivity? The rate at which producers convert light energy to chemical energy 2 of 9 What is biomass? biomass is the total mass of plant matter that accumulates from primary productivity. 3 of 9 What percent of primary productivity ends up as matter? Only about 50% of primary productivity ends up as matter- the other 50% is in the form of energy. 4 of 9 What percent of vegetation do herbivores eat? Herbivores only eat about 10% of the available vegetation, decomposers and detritivores consume the rest 5 of 9 Will there be much new animal tissue produced? no the amount of new animal tissue produced from eating plant matter is tiny 6 of 9 What is a pyramid of biomass? The pyramid of biomass represents the amount of energy in a food chain. 7 of 9 What is bioaccumulation? the accumulation of substances like toxins. 8 of 9 What is the greenhouse effect? Co2 builds up in the atmosphere and traps infra-red radiation, causing the Earth to heat up. 9 of 9
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