Life on earth Flashcards
to revise biology (26 cards)
The place were an organism lives is its
habitat
All the organisms of one species in a habitat is a
population
All the living organisms in a habitat are known as a
community
What do we call a group of organisms that can interbreed to produce fertile offspring?
Species
The variety of living things in an ecosystem is known as
biodiversity
What makes up an ecosystem?
All the living things in their environment
What is a predator?
An organism that hunts and feeds of off other organisms known as prey
What do we call animals that are hunted by a predator?
Prey
What is the other name for a green plant (because it can make its own food)
Producer
What do we call animals that obtain food by feeding on other organisms?
Consumer
What is the term for “the role an organism plays in its community”?
Niche
What do the arrows in a food chain represent?
The direction of energy flow
Why do food chains always start with green plants?
Because they are the start of the food chain
Name 3 ways that energy can be lost from a food chain
Movement, heat and undigested material
What diagram shows a number of food chains linked in an ecosystem?
Food web
What does a Pyramid of Numbers show?
What does a Pyramid of Energy show?
The flow of energy
What occurs in ecosystems when resources are in short supply?
Name the type of competition that occurs amongst individuals of different species
interspecific
Name the type of competition that occurs amongst individuals of the same species
intraspecific
Name three abiotic factors
Light intensity, soil moister and the temp
Name three biotic factors
Disease, consumers and viruses
How can you minimise error when using a moisture meter?
Name the equipment used to sample plants
