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AQA GCSE Ecology
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Kingdom, Phylum, Class, Order...
 
Family, Genus, Species
 
Familum, Gene, Species
 
Familiae, Genius, Species
 
Family, Genus, Specaes
When the number of prey increase in an ecosystem, what happens to the number of predators shortly after?
 
Increases
 
Decreases
What changes have happened to the bones in the feet of horses over the last 50 million years?
 
There are less bones and they are much larger
 
There are more bones and they are larger
 
There are less bones and they are smaller
 
There are more bones and they are smaller
The Arabian aryx has long horns to fight for territory. How could these have evolved?
 
Long horns gave a better chance of survival and reproduction
 
Only some aryx will have long horns, it is random
 
The alleles for long horns were not passed on
 
Long horns are caused by an additional chromosome
How is the Arabian oryx adapted to survive in the hot desert?
 
Large hooves to walk in the sand
 
Light colour to stay warm
 
Long horns help it to find water
Why do plants and animals adapt to their environment?
 
To survive and reproduce
 
To aerobically respire
 
To produce body heat
 
To prevent DNA mutation
What is an extremophile?
 
An organism that lives in an extreme environment.
 
An organism that avoids extreme environments.
What structural adaptations do cacti have?
 
Spines to stop them from being eaten
 
Chloroplasts for photosynthesis
 
It grows towards the light
What behavioural adaptation does a male peacock have?
 
He shows his tail feathers as a mating ritual
 
He has sharp claws and a sharp beak
 
He has good vision and hearing
What thing are mammals not competing for?
 
Oxygen
 
Food
 
Mates
 
Territory
Identify the biotic factor.
 
New pathogens
 
Oxygen levels
 
Light intensity
 
Wind intensity
Identify the abiotic factors.
 
Light intensity, temperature, moisture, soil pH
 
New predators, availability of food, new pathogens
What is a stable community?
 
The size of the populations in it remain fairly constant.
 
The size of the populations in it vary dramatically.
What is intraspecific competition?
 
The competition that exists among organisms of same species.
 
The competition that exists between different species.
What does interdependence mean?
 
All organisms in an ecosystem depend upon each other.
 
Photosynthesising plants in an ecosystem compete for light.
 
The populations of all species remain relatively constant.
 
Organisms in an ecosystem are independent of each other.
What is a secondary consumer?
 
An organism that is a carnivore and eats primary consumers.
 
An organism that eats producers.
 
An organism that eats tertiary consumers.
 
An omnivore that eats plants and meat.
Identify the producer.
 
Grass
 
Rabbit
 
Fox
 
Predator
What is an ecosystem?
 
Two or more populations that exist in an environment
 
Two or more populations of organisms
 
All the organisms of the same species in an area
What is a population?
 
All the organisms of the same species in an area
 
Two or more communities of organisms
 
The interactions between organisms and their environment
What is a community?
 
Two or more populations of organisms
 
The interaction between living organisms and the environment
 
Two or more populations of organisms in their environment
 
All the organisms of the same or closely-related species
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