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Biology Ch.2 Vocabul

MD Freshman Biology Chapter 2 Vocabulary

Scientific study of interactions among organisms and their environment. ecology
Illustration of the relative amount of energy or matter contained within each trophic level in a given food chain or web. ecological pyramid
Photosynthetic algae found near the surface of the ocean. phytoplankton
A step in the food chain or web. tropic level
Organism that obtains food by consuming other living things. heterotroph
The process in which chemical energy is used to produce carbohydrates. chemosynthesis
Organism that obtains energy by eating both plants and animals. omnivore
Organism that break down and obtains energy from dead organism matter. decomposer
Organism that relies on others for food. consumer
Organism that feeds on plants and animal remains and other dead matter. detritivore
A series of steps in a ecosystem in which organisms transfer energy by eating and being eaten. food chain
Assemblage of different population that live together in a defined area. community
Group of individuals of the same species that live in the same area. population
A group of similar of organisms that can breed fertile offspring. species
Physical or nonliving factor that shape an ecosystem. abiotic factor
Organism that is able to capture energy from sunlight or chemicals and us it to produce its own food from inorganic compounds. autotroph
Organism that obtains energy by eating animals. carnivore
First producer of energy rich compounds that are later used by other organisms. primary producer
Organisms that obtain their energy by eating only plants. herbivore
Process used by plants and other autotrophs to capture light energy and use it to power chemical reaction that convert carbon dioxide and water into oxygen and energy rich carbohydrates. photosynthesis
Part of earth in which life exists including land, air, water, and atmosphere. biosphere
Animal that consumes the carcus of other animals. scavenger
The total amount of living tissue within a given trophic level. biomass
Network of complex interaction formed by the feeding relation among the various organism in a ecosystem. food web
All the organisms that live in a place together with a nonliving environment. ecosystem
A group of ecosystems that share similar climates and typical organisms. biome
Process of converting nitrogen gas in to nitrogen compound that plants can absorb and use. nitrogen fixation
Small free floating animals that form part of plankton. zooplankton
Single essential nutrient that limits productivity in an ecosystem. limiting nutrient
Process in which elements, chemical compounds, and other forms of matter are passed from one organism to another. biogeochemical cycle
Any living part of the environment with which an organism might interact. biotic factor
Process by which soil bacteria convert nitrates into nitrogen gas. denitrification
Chemical substance that an organism needs to sustain life. nutrient
Created by: LForzley