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WorksheetsBiodiversity
Total questions: 31
Worksheet time: 18mins
When there is high ______________, many species of plants and animals can flourish.
biodiversity
organisms
health
resources
Changes in biodiversity can influence humans’ _______________ as well as ecosystem services.
biodiversity
organisms
health
resources
Changes to an ecosystem’s biodiversity can have a direct effect on humans because humans–
inhabit all areas of the earth’s ecosystems.
use minerals from the ground to make things.
rely mostly on solar power for energy.
depend on the earth’s natural resources.
What ecological services do plants provide that help Earth’s biodiversity?
Plants provide all of these ecological services.
Plants help slow the effects of weathering and erosion.
Plants are used to make many medicines that are used to treat diseases in people and animals.
Plants maintain the balance of gases in the air through photosynthesis, supplying oxygen for humans and animals.
Define genetic diversity
a variety of genes and traits within a species
a variety of ecosystems in a given area
system made up of all the living and nonliving things in a given area
a variety of species in an ecosystem
Which ecosystem below has the HIGHEST biodiversity?
The more different types of organisms and the more relationships that can occur between organisms the greater the...
Species Diversity
Genetic Diversity
Ecosystem Diversity
Greater ____________________ means there are more habitats to support different types of organisms.
Ecosystem Diversity
Species Diversity
Genetic Diversity
The greater the ____________________, the more likely a species is to survive changes to their environment
Genetic Diversity
Species Diversity
Ecosystem Diversity
Things of value that ecosystems provide for free are called ___________________.
ecosystem services
ecosystem diversity
food services
species diversity
Which biome is more biodiverse?
Desert
Grassland
Tundra
Rainforest
An endemic species is one that
exists in only one geographic area
exist all over the world
doesn't exist anymore
is a newly discovered species
A species that is likely to become extinct if protective measures are not taken immediately is known as
threatened species
endemic species
keystone species
endangered species
An exotic species is
a species that is not native to a particular region
a newly discovered species in a particular region
a genetically modified species in a particular region
a species that is native to a particular region
An endemic species is
exotic and found everywhere
exotic and found only in certain regions
native and found only in a limited area
native and found everywhere
Which do you think has a higher species diversity biodiversity, a food chain or a food web?
Food Chain
Food Web
In general, as you move from the equator to the poles, what happens to biodiversity>
Increases
Decreases
Remains the same
In a food web, each ____________ depends on the trophic level below it for energy.
consumer
producer
decomposer
detritivore
Autotrophs are the same as producers.
True
False
In any food web, the organisms that are responsible for converting raw energy into usable chemical energy are collectively called ________ while organisms that recycle the nutrients trapped in dead organisms are collectively called ________.
producers;consumers
producers; decomposers
heterotrophs; consumers
heterotrophs;autotrophs
The transfer of energy from one organism to the next in an ecosystem begins with a producer. A producer is an organism that produces its own food. A consumer is an organism in a food chain that obtains energy from producers or other consumers; consumers may be herbivores or carnivores.
Which food chain correctly describes the flow of energy in an ecosystem?
grass → grasshopper → fish → human
grasshopper → fish → human
human → fish → grasshopper
human → grasshopper → fish → grass
Something important is missing from this food web! The grass starts this food web. But the plant's energy comes from __________, the one picture that is missing from the food web.
water
the sun
the air
the soil
What happens to the amount of available energy in the pyramid as it moves up through the different levels?
it increases
it decreases
it remains the same
it decreases, then increases
