WorksheetsBiodiversity
Total questions: 40
Worksheet time: 42mins
Aphids are tiny insects that live on and eat the leaves of plants, removing vital nutrients from the plants.
Predation
Parasitism
Commensalism
Mutualism
Biodiversity, aka biological diversity, usually refers to
the same species in a general location
the number of different species in a given area
the number of animal species in a given area
the number of plant species in a given area
Species that are clearly critical to the functioning of an ecosystem are known as
biodiversity
keystone species
main species
native 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
a species that is not native to a particular region and has no natural predators and little competition
consumer species
producer species
invasive species
adapted species
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
Succession that occurs in areas that previously didn't support life, such as on rocks or ice
tangential succession
primary succession
secondary succession
quaternary succession
A common type of succession that occurs where an event such as a forest fire has occurred, or a farmer's field has been abandoned is called
common succession
primary succession
secondary succession
Quaternary succession
A population is
a group of similar species in different areas
a group of the same species in the same geographic area.
a group of several species in the same geographic area
a group of several species along with their abiotic factors in a small area.
A community is
Several different populations scattered across several states.
Several different organisms in the same geographic area
One type of organism in the same geographic area
Several different populations in the same geographic area
the variety of life in the world or in a particular habitat or ecosystem
biodiversity
demography
carrying capacity
poaching
a species that is not native to a particular region
endemic
exotic
endangered
extinct
species that are native to and found only within a limited area
endemic
exotic
endangered
extinct
a species at risk, but not yet endangered
endangered
exotic
endemic
threatened
How many species are estimated to be living on Earth?
between 10,000 and 100,000
between 1 and 2 million
between 500,000 and 1 million
between 10 and 50 million
Which of the following would be most effective in slowing the loss of biodiversity?
creating large parks/preserves in biodiversity hotspots
requiring every country to maintain a seed bank
In what part of the world are the greatest number of extinctions occurring?
in deserts
in the Arctic
in tropical rain forests
The United States laws that protect endangered species:
are much weaker than the legal protections in most other countries.
are considered to be the strongest in the world.
According to biologists, what percentage of species have become or are expected to become extinct between 1900 and 2100?
1%
10%
25%
60%
The level of biodiversity that involves a variety of habits and communities is _____ diversity.
ecosystem
population
genetic
species
The ecosystem approach to conservation is partly based on the idea that:
a healthy biosphere requires intact ecosystems.
human needs are of secondary importance.
What level of biodiversity is most commonly equated with the overall concept of biodiversity?
genetic
ecosystem
species
Why is biodiversity important to ecosystems?
It helps populations adapt to ecological changes.
It increases at each level of the food chain.
Where are many critical biodiversity hotspots located?
islands, tropical rain forests, and coastal areas
cities and developed areas of the world
Biodiversity is important to keep an area (biome) healthy. In this example "Food Web A" is sustainable. Why is sustainability important for an ecosystem in "Food Web A".
If one organism is removed the food web can still operate (work) with little or no negative effect.
If an organism is removed the food web will collapse and will affect the environment.
Food Web B is an example of...
Low biodiversity and low sustainability. If the producer dies then all the food web will suffer.
High biodiversity and high sustainability. If an organism is removed the food web will continue with no effect.
The lionfish is a venomous fish found primarily in the Red Sea and the Indian Ocean. In the 1990s, lionfish were accidentally released into the Atlantic Ocean, where they found abundant resources and favorable environmental conditions. Which of the following scenarios is most likely to result in the lionfish having a major impact on the communities into which they were introduced?
With no natural predators, the lionfish population will become very large.
Some native species of invertebrates will develop a resistance to lionfish venom.
Which habitat exhibits the greatest biodiversity?
A habitat with 15 different species with about 300 individuals each
A habitat with 10 different species with about 75 individuals each
