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- 1. Multiple Choice
The variety of living things in an area is referred to as
genes
biodiversity
abiotic
natural selection
- 2. Multiple Choice
Reduction in the sea otter population affected the Pacific coast ecosystem by
decreasing the biodiversity
reducing the number of sea urchins
increasing the kelp beds
increasing the salmon population
- 3. Multiple Choice
Why is biodiversity important to an ecosystem?
It allows animals to feed permanently from one type of plant.
It helps populations adapt to ecological changes.
It increases at each level of the food chain
It allows for the easy extinction of a species
- 4. Multiple Choice
1. What level of biodiversity is most commonly equated with the overall concept of biodiversity?
genetic diversity
species diversity
both are commonly equated with biodiversity
neither are equated with biodiversity
- 5. Multiple Choice
1. Reasons for preserving biodiversity include all of the following EXCEPT
isolating unique genetic material so it can be incorporated into existing crops
increasing the chances of discovering organisms with medicinal value
preventing natural evolution
survival of humans
- 6. Multiple Choice
The level of biodiversity that involves a variety of habits and communities is
species diversity
genetic diversity
population diversity
ecosystem diversity
- 7. Multiple Choice
1. A(n) _________________________ is any species that is essential to the health of an ecosystem.
pioneer species
gene
keystone species
invasive species
- 8. Multiple Choice
1. A recreational experience among life forms and ecosystems is called _______________.
ecotourism
species diversity
ecodiversity
none of the other answers
- 9. Multiple Choice
A(n) ____________________ is a segment of DNA that codes for a specific trait
chromosome
DNA strand
centromere
gene
- 10. Multiple Choice
1. The kind of diversity represented by all the different genes found in a population is called_________________________.
genetic diversity
Species diversity
population diversity
ecological diversity
- 11. Multiple Choice
The sources of many antibiotics are in chemicals produced by ____________________.
plants
animals
fungi
none of these
- 12. Multiple Choice
A crop produced by combining genetic materials is called ______________________.
genetic variation
hybrid
species diversity
ecodiversity
- 13. Multiple Choice
What is an example of an apex predator?
Orca
Otter
Wolf
all of these
- 14. Multiple Choice
What group of living things make up the most species on earth?
insects
plants
animals
bacteria
- 15. Multiple Choice
1. The group of traits and characteristics within a population is referred to as_______.
species diversity
biodiversity
population diversity
genetic diversity
- 16. Multiple Choice
How many of the species on earth are considered known?
200,000
1 million
1.9 million
10 million
- 17. Multiple Choice
Which organisms do we know the fewest percentage of?
bacteria
insects
vertebrates
plants
- 18. Multiple Choice
How do species become scientifically known?
The species are observed 2 or more times.
The species are collected and described.
The species are photographed.
The species are named.
- 19. Multiple Choice
Why are scientists uncertain about the total number of species living on earth?
Some species live in areas that make them difficult to observe.
Lack of effective communication between scientists.
All of the unknown species must be viewed through a microscope.
Scientists have identified all the species on earth.
- 20. Multiple Choice
Which is a type of ecotourism?
Off-roading in an ATV
Big game hunting
Snow skiing
Whale watching
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