WorksheetsBiodiversity Review
Total questions: 20
Worksheet time: 13mins
High biodiversity is a sign of a healthy ecosystem.
True
False
Image "B" shows more biodiversity than image "A". Why?
Because "B" shows more different species than image "A"
Because image "B" has less different species than "A"
"A" has a greater number of same species plants so this statement is wrong.
Both images show the same biodiversity
A stable ecosystem typically has high biodiversity.
True
False
Why is "A" less biodiverse than "B"?
Image "A" is more biodiverse.
Image "A" has many corn plants and this makes it have high "rich" biodiversity.
Image "A" has a lot more plants than image "B"
Even though "A" has a lot of corn plants they are all the same species and makes this a low "poor" biodiverse area.
Define genetic diversity
variation of genes within a species or population in a given area
variety of ecosystems in a given area
system made up of all the living and nonliving things in a given area
disturbance in the environment conditions that cause genetic changes to occur in organisms
Define ecosystem diversity
variety of ecosystems in a given area
variation of genes within a species or population in a given area
variety of life in Earth's land, freshwater, and marine ecosystems
changes to an ecosystem that affect how the parts of it interact
Define species diversity
both the number of different species and individuals of each species in a given area
variation of genes within a species or population in a given area
variety of ecosystems that are in a given area
changes in an ecosystem that affect of the organisms interact with one another
Which statement best describes an example of low species diversity?
A population of frogs has a wide variety of skin colors
A marsh ecosystem is covered by a single species of cattail bulrushes
A state park includes multiple forest, wetland, and freshwater ecosystems
Which statement best describes an example of high species diversity?
A pond ecosystem is populated by a single species of frogs
A state park includes multiple forest and freshwater ecosystems with many different species of fish, frogs, and birds
A desert ecosystem is populated only by organ pipe cacti, camels, and armadillo lizards
Invasive species alter the ecosystem by ______ in number quickly. This leads to ______ food for the native species.
increasing, less
increasing, more
decreasing, less
decreasing, more
Invasive plants compete with native plants for --- [choose 3]
sunlight
water
oxygen
space
Which of the following is an example of an invasive species?
Trout
Kudzu
Mosquito
Daisy
Why do populations of invasive species grow so quickly?
They are prey to many animals.
They are native to the area.
They help keep the ecosystems in balance.
They have no predators.
What happens to an ecosystem when a native species disappears?
Biodiversity increases
Invasive species leave
The food web becomes more stable
Opportunities open up for invasive species
Which invasive species is literally the worst thing in the entire universe, according to Tracy (and she's a scientist, so this must be true).
Buckthorn
Cane Toad
Poison Hemlock
Purple Loosetrife
