Biology Chapter 3 Ecology flash cards

Set: Biology Chapter 3 Ecology

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	Term	Definition
	ecosystem	all organisms and non-living parts of the physical environment that are found in a particular place
	individual	one particular organism
	community	groups of different populations that live together
	population	groups of individuals in same species that live together
	species	group of organisms so alike that they mate and reproduce
	decomposers	break down organic matter; ex. bacteria
	producers	organisms that capture energy from sunlight and inorganic elements and use it to produce food
	heterotrophs	organisms that rely on other organisms for energy and food supply
	autotrophs	organisms that capture energy from sunlight and inorganic elements and use it to produce food
	herbivores	obtain energy by eating only plants
	carnivores	obtain energy by eating only animals
	omnivores	eat both plants and animals for energy
	detritovores	feed on plant and animal remains and other dead matter
	ecology	scientific study of interactions between and among organisms and their environment
	biosphere	the parts of the planet where life exists, including land, water and air
	photosynthesis	when autotrophs use sunlight to convert carbon dioxide and water into oxygen and carbohydrates
	transpiration	loss of water from a plant through its leaves
	trophic level	each step in a food chain
	biomass	total amount of living tissue within a step of the food chain
	recycle	to use again

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