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Practice Quizzing
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1

The snail Littorina prefers to feed on , a species that can outcompete in tide pools.
2

We can say that there is a significant difference between two samples when the 95% confidence intervals for the two samples do not overlap.
A)TRUE
B)FALSE
3

Keystone species have two requirements: low in the community and high on community structure.
4

Research indicates that fish on reefs without cleaner wrasses _________.
A)have four times the number of parasites as those on reefs with wrasses
B)have three times fewer parasites than on other reefs
C)have greater biomass but smaller impact
D)a and d are correct
5

Researchers have found that following fire in the fynbos of South Africa small-seeded plants are excluded from recruitment in those areas invaded by Argentine ants.
A)TRUE
B)FALSE
6

Research indicates that the Solenopsis fire ant may be beneficial to agriculture because it _________.
A)reduces the number of bacterial pathogens
B)increases soil nitrogen
C)reduces the number of arthropods
D)increases seed germination





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