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DHS Eco Unit

DHS Eco Unit terms and definitions

DefinitionWord/ phrase
The place where an organism lives Habitat
All the organisms (plant, animals and micro-organisms) found in an ecosystem. Community
The community + habitat OR All the living and non-living components found in a particular environment Ecosystem
The term used to describe any organism that can make its own food using light energy, by photosynthesis. Producer
The term used to describe any organism that gets its energy from eating other organisms. Consumer
The term used to describe any animal that gets its energy by eating only plants. Herbivore
The term used to describe any animal that gets its energy by eating both plants and other animals. Omnivore
The term used to describe any animal that gets its energy by eating other animals. Carnivore
The types of organisms that are Decomposers. Bacteria and Fungi
The term used to describe a non-living factor which may effect the distribution organisms. Abiotic factor
The term used to describe a living factor which may effect the distribution organisms. Biotic factor
Occurs when 2 or more organisms require the same limited resource. Competition
A diagram that show the movement of energy between a number of different types of organisms. Food chain
The term used to describe a number of food chains linked together. Food web
The term used to describe an organism that is hunted for food. Prey
The term used to describe an organism that hunts other organisms for food. Predator
A diagram which shows the number of organisms at each level of a food chain. Pyramid of numbers
The term used to describe an organism that shows the presence or absence of an abiotic factor in an ecosystem. Indicator species
The term used to describe a chemical used to control unwanted plants or animals. Pesticide
The term used to describe the number of different species, genes and ecosystems present in a region. Biodiversity
The term used to describe the role that an organism plays within a community. Niche
Percentage of the energy lost at each level of a food chain. 90%
Percentage of the energy passed to the next organism at each level of a food chain. 10%
3 ways in which energy can be lost from the food chain Heat Movement Undigested food
In a food chain ...... show the direction of the movement of energy from one organism to the next. Arrows
Plants take in this type of compound to make proteins. Nitrates
This type of bacteria have the ability to take nitrogen from the air and convert it into nitrate compounds. Nitrogen-fixing bacteria
The term used to describe the type of competition which occurs between individuals of different species. Interspecific
The term used to describe the type of competition which occurs between individuals of the same species. Intraspecific
The term used to describe the type of competition which is more intense. Intraspecific
This piece of equipment used to sample an ecosystem is a square of known area divided up into smaller squares. Quadrat
The term used to describe a group of organisms of the same species living in an ecosystem. Population
Created by: dhsbiology