31 terms

Year 7 Ecology

2014
STUDY
PLAY
Ecology
The study of the relationships of organisms with one another and their environment.
Abiotic
Non-living factors that affect the living of organisms (sand, water, etc.)
Biotic
Living factors that affect the living of organisms (animals, plants, etc.)
Population
Two or more organisms of the same species
Community
Multiple populations that interact in an area
Ecosystem
The interactions between abiotic things and the biotic community in an area
Adaptation
A characteristic that is inherited by an organism that helps it to thrive in its environment
Habitat
The location where an organism lives
Sun
Ultimate source of energy for all living things.
Species
A group of living organisms consisting of similar individuals capable of reproduction and give fertile offspring.
Food Chain
A series of steps in which organisms transfer energy by eating and being eaten
Energy Flow
What is going through a food chain, starting with the sun and then passing from one organism to another?
Symbiosis
When organisms of two different species live closely together in a relationship that lasts over time.
Parasitism
Relationship in which one partner benefits and the other is harmed
Predation
Relationship in which one organism (predator) attacks another (prey) for survival
Mutualism
Relationship in which each partner benefits from the relationship
Commensalism
Relationship in which one partner benefits and the other is not affected.
Competition
Relationship where both organisms struggle for the same resources
Pyramid of Numbers
Illustrates the number of organisms at each level of the food chain. The number of organisms decreases as the pyramid levels increase.
Food Web
The network of all the interconnected food chains in a community
Autotroph
An organism that gets its energy by making its own food from light or chemical energy
Heterotroph
An organism that gets its energy from eating other organisms for food
Consumer
Organisms that eat the food made by producers. Can be herbivores, carnivores or omnivores
Respiration
The process in which the cells of organisms use oxygen to get ENERGY from food. giving CO2 and Water as by-products.
Photosynthesis
The process in which plants (producers) make their own food from sunlight using CO2 and Water.
Decomposer
An organism, usually a bacterium or fungus, that breaks down dead plants and animals into simpler substances.
Producers
They are green plants that make their own food by photosynthesis.
ConsumerS
Oorganism that obtain energy and nutrients by feeding on other organisms.
Herbivores
Consumers that obtain their energy by eating plants only.
Carnivores
Consumers that obtain their energy by eating animals only.
Omnivores
Consumers that obtain their energy by eating both plants and animals.