Species in imminent danger of extinction are labeled threatened. True False What

Question

Species in imminent danger of extinction are labeled threatened.

True

False

What description would best characterize a wolf and a fox that both eat the same species?

herbivory

parasitism

competition

mutualism

Which of the following is not an example of an invasive species?

sagebrush

cheatgrass

Burmese python

mongoose

One would expect to find the greatest amount of biomass in a grassland or forest community in which of the following groups?

primary consumers

tertiary consumers

primary producers

secondary consumers

The most common cause of sympatric speciation in plants is polyploidy.

True

False

Allopatric speciation requires geographical isolation.

True

False

Darwin would support the idea that giraffes have longer necks because they kept stretching them to reach leaves that were growing higher in a tree.

True

False

Which of the following has an impact that is much larger than its total abundance on its community and helps hold the rest of that community in place?

facilitator species

keystone species

primary species

dominant species

Which of the following can cause a severe environmental problem through biological magnification?

ozone hole

smog

acid precipitation

PCBs

When energy is transferred from one trophic level to another, how much is typically lost?

10%

30%

90%

50%

herbivory

parasitism

competition

mutualism

Explanation / Answer

Species in imminent danger of extinction are labeled threatened (true)

What description would best characterize a wolf and a fox that both eat the same species? Competition

Which of the following is not an example of an invasive species? Sagebrush

One would expect to find the greatest amount of biomass in a grassland or forest community in which of the following groups? primary producers

Which of the following has an impact that is much larger than its total abundance on its community and helps hold the rest of that community in place? keystone species

Which of the following can cause a severe environmental problem through biological magnification? Ozone hole

When energy is transferred from one trophic level to another, how much is typically lost? 90%

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