What is a community?
Two or more populations of organisms in their environment
All the organisms of the same or closely-related species
The interaction between living organisms and the environment
Two or more populations of organisms
What is a population?
The interactions between organisms and their environment
Two or more communities of organisms
All the organisms of the same species in an area
What is an ecosystem?
Two or more populations of organisms
All the organisms of the same species in an area
Two or more populations that exist in an environment
Identify the producer.
Grass
Rabbit
Predator
Fox
What is a secondary consumer?
An organism that eats producers.
An omnivore that eats plants and meat.
An organism that eats tertiary consumers.
An organism that is a carnivore and eats primary consumers.
What does interdependence mean?
All organisms in an ecosystem depend upon each other.
Organisms in an ecosystem are independent of each other.
The populations of all species remain relatively constant.
Photosynthesising plants in an ecosystem compete for light.
What is intraspecific competition?
The competition that exists between different species.
The competition that exists among organisms of same species.
What is a stable community?
The size of the populations in it vary dramatically.
The size of the populations in it remain fairly constant.
Identify the abiotic factors.
New predators, availability of food, new pathogens
Light intensity, temperature, moisture, soil pH
Identify the biotic factor.
Oxygen levels
New pathogens
Wind intensity
Light intensity
What thing are mammals not competing for?
Territory
Oxygen
Food
Mates
What behavioural adaptation does a male peacock have?
He shows his tail feathers as a mating ritual
He has good vision and hearing
He has sharp claws and a sharp beak
What structural adaptations do cacti have?
Spines to stop them from being eaten
It grows towards the light
Chloroplasts for photosynthesis
What is an extremophile?
An organism that avoids extreme environments.
An organism that lives in an extreme environment.
Why do plants and animals adapt to their environment?
To survive and reproduce
To aerobically respire
To produce body heat
To prevent DNA mutation
How is the Arabian oryx adapted to survive in the hot desert?
Long horns help it to find water
Large hooves to walk in the sand
Light colour to stay warm
