What is intraspecific competition?
The competition that exists between different species.
The competition that exists among organisms of same species.
What is a secondary consumer?
An organism that is a carnivore and eats primary consumers.
An organism that eats producers.
An omnivore that eats plants and meat.
An organism that eats tertiary consumers.
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 smaller
There are more bones and they are larger
There are less bones and they are much larger
There are more bones and they are smaller
What is a community?
The interaction between living organisms and the environment
Two or more populations of organisms in their environment
Two or more populations of organisms
All the organisms of the same or closely-related species
Why do plants and animals adapt to their environment?
To produce body heat
To survive and reproduce
To aerobically respire
To prevent DNA mutation
What structural adaptations do cacti have?
Chloroplasts for photosynthesis
It grows towards the light
Spines to stop them from being eaten
Kingdom, Phylum, Class, Order...
Family, Genus, Specaes
Familiae, Genius, Species
Family, Genus, Species
Familum, Gene, Species
What is an extremophile?
An organism that lives in an extreme environment.
An organism that avoids extreme environments.
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 an ecosystem?
All the organisms of the same species in an area
Two or more populations of organisms
Two or more populations that exist in an environment
What thing are mammals not competing for?
Territory
Food
Oxygen
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
The Arabian aryx has long horns to fight for territory. How could these have evolved?
The alleles for long horns were not passed on
Only some aryx will have long horns, it is random
Long horns gave a better chance of survival and reproduction
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
Identify the abiotic factors.
Light intensity, temperature, moisture, soil pH
New predators, availability of food, new pathogens
When the number of prey increase in an ecosystem, what happens to the number of predators shortly after?
Increases
Decreases
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 producer.
Predator
Grass
Fox
Rabbit
What does interdependence mean?
Photosynthesising plants in an ecosystem compete for light.
The populations of all species remain relatively constant.
All organisms in an ecosystem depend upon each other.
Organisms in an ecosystem are independent of each other.
Identify the biotic factor.
New pathogens
Light intensity
Wind intensity
Oxygen levels