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WorksheetsKeystone Species
Total questions: 14
Worksheet time: 7mins
What is a keystone species?
A species that is the most abundant in an ecosystem
A species that has a crucial role in the way an ecosystem functions
A species that is the largest in an ecosystem
A species that is the smallest in an ecosystem
What can happen to an ecosystem without keystone species?
The ecosystem would remain the same
The ecosystem would become more diverse
The ecosystem would be dramatically different or cease to exist
The ecosystem would have more predators
What is often a characteristic of a keystone species?
They are usually herbivores
They are often predators
They are always the largest animals
They are always the smallest animals
What is an example of a keystone species mentioned in the text?
Deer
Rabbits
Oysters
Vultures
What effect does the disappearance of a keystone species have on the ecosystem?
It causes a domino effect
It has no effect
It increases the population of predators
It decreases the population of plants
What happened to the biodiversity of the area when the oysters were removed?
It increased.
It decreased.
It stayed the same.
It fluctuated.
What role do sea otters play in the Pacific Northwest ecosystem?
They eat kelp.
They control the sea urchin population.
They are prey for crabs.
They burrow in the soil.
What is coral?
A type of fish.
A type of plant.
A type of animal.
A type of bird.
What happens to the savanna if elephants are not present?
It becomes a forest.
It becomes a desert.
It becomes a lake.
It becomes a mountain.
Match the underlined word with its definition: crucial
important
chain reaction
to do well
species that naturally lives in a space
large variety
Match the underlined word with its definition: native
eats dead things
large variety
to do well
chain reaction
species that naturally lives in a space
Match the underlined word with its definition: biodiversity
large variety
species that naturally lives in a space
chain reaction
to do well
eats dead things
Match the underlined word with its definition: consume
species that naturally lives in a space
chain reaction
to eat
large variety
to do well
Match the underlined word with its definition: thrive
eats dead things
large variety
species that naturally lives in a space
chain reaction
to do well
