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Ecology

Chapter 3:1 & 3:2

QuestionAnswer
Ecology the scientific study of interactions among organisms and between organisms and their environment.
Biosphere contains the combined portions of the planet in which all of life exists, including land, water, and air, or atmosphere.
Species a group of organisms so similar to one another that they can breed and produce fertile offspring.
Populations group of individuals that belong to the same species and live in the same area.
Communities assemblages of different populations that live together in a defined area.
Ecosystem a collection of all the organisms that live in a particular place, together with their nonliving, or physical, environment.
Biome a group of ecosystem that have the same climate and similar dominant communities.
Autotrophs use energy from the environment to fuel the assembly of simple inorganic compounds into complex organic molecules
Producers make their own food
photosynthesis autotrophs use light energy to power chemical reactions that convert carbon dioxide and water into oxygen and energy-rich carbohydrates such as sugars and starches
chemosynthesis when organisms use chemical energy to produce carbohydrates
heterotrophs see consumers
Consumers eat food given to them
Herbivores obtain energy by eating only plants
Carnivores eat animals
Omnivores eat both plants and animals
Detritivores feed on plant and animal remains and other dead matter
Decomposers break down organic matter
Food chain a series of steps in which organisms transfer energy
Food web when the feeding relationships among the various organisms in an ecosystem form a network of complex interactions ecologists describe these relationships
trophic level each step in a food chain or food web
ecological pyramid the amount of energy or matter in an ecosystem can be represented
biomass the total amount of living tissue withing a given trophic level
Created by: #YOLO#SWAG
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