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WorksheetsUnit 3 Biodiversity Review
Total questions: 20
Worksheet time: 10mins
Biodiversity is defined as
a species that is not native to a particular region
a species that are very important to the functioning of an ecosystem
a number of different species in a given area
a species that is likely to become endangered if it is not protected
Keystone Species is defined as
species that are very important to the functioning of an ecosytem.
a species when the very last individual dies
any species whose numbers have fallen so low that it is likely to become extinct in the near future.
a species that is not native to a particular region
Which of the following describes the importance of biodiversity to an ecosystem?
People like to be able to see all the different plants and animals
Biodiversity is not as important as many people think
If there aren't all the different species, there will be resources that aren't being used
Biodiversity can help minimize the effects of losing a species.
A plant nursery only grew one type of tomato. All of their tomatoes died from the same disease. What was most likely true of the tomato plant population?
It had too little biodiversity
It had a few plants that were resistant to disease
It had a lot of resistance to disease
It had too much genetic variation
Which human activity would be most destructive to the biodiversity of the biosphere?
The release of species of freshwater trout in lakes
The removal of plants from the food webs they support
The burning of wood and coal in rural areas
The removal of erosion barriers from forest boundaries
In what way are humans most impacting the biodiversity of ecosystems around the world?
Recreational hunting
We are putting too many organisms in zoos or keeping them as pets
We are increasing biodiversity by breeding new species
We are destroying the habitats of a large number of species
Why are invasive species such a problem in their new ecosystem?
The new ecosystem is probably weaker than the native one
They have mutations making them more adapted to the new ecosystem
The new ecosystem isn't adapted to their presence
They cause mutations in the native species
Which of the following would increase species biodiversity in Florida?
Protecting black bears in state or national forests
Placing no limits on alligator hunting in lakes
Legalized hunting for monkeys around the St. John’s River
Clearing land for a new entertainment theme park
Which of the following would lead to an increase in species biodiversity in Florida?
Clearing land for a new entertainment theme park
Protecting an endangered species in state or national forests
Releasing snails from South America into the wild
Letting wild boar from England invade people's farm land
Which of the following would possibly lead to a decrease in species biodiversity in Florida?
Protecting land for state and national parks
Hosting an ocean coast cleanup project once a month
Letting wild boar from England invade peoples' farm land
Python hunting during a specific season
Pesticides are often used by farmers to kill or control certain forms of animal life that are harming the crops. Some of the chemicals used can be biologically magnified and affect endangered species. One of the best laws we have to control pesticide use in the environment is the Endangered Species Act.
Which is the most likely result of enacting legislation to restrict the use of pesticides?
Increasing the mutation rate in endangered species
Causing pesticides to become more toxic to insects
Reducing biodiversity in various ecosystems
Decreasing the space and resources available
Which of the following would decrease species biodiversity in Florida?
Pollution limits from coal-powered electrical plants
Captive breeding programs for black bears
Marine protected areas for manatees
Introduction of pythons into the Everglades
Which condition below is closely linked to a long-term decrease in biodiversity and a positve impact on economic growth?
Tourism
Flooding
Refuges
Deforestation
A particular species of lizard has become extinct. Which of these is not a factor that could have led to its extinction?
Adverse climate conditions
Increased genetic variation
Habitat destruction by humans
Competition for food resources
Which of the following is not one of the ways in which coral reefs are threatened by human activities?
Pollution
Development along waterways
Creation of artificial reefs
Overharvesting of fish
Any species that is likely to become endangered if it is not protected
Threatened Species
Exotic Species
Keystone Species
Endangered Species
Relying on one important crop can cause
Hybrids if the crop mixes with another population
Disease if the crop came from wild plants
A new crop variety if a new species is introduced
Famine if the crop is wiped out.
Hunting sea otters along the U.S. Pacific coast resulted in
A decrease in biodiversity
A reduction in the sea urchin
The extinction of kelp population
An increase in biodiversity
How do people benefit from biodiversity?
Source of new products
Variety of food sources
Aesthetic or personal enjoyment
All of the above
A crop that results from combining genetic materials is called
A hybrid variety
A keystone species
A bottleneck offspring
A wildflower species
