Site MapHelpFeedbackPractice Quizzing
Practice Quizzing
(See related pages)



1

Which of the following is NOT a measurement of primary productivity?
A)oxygen production
B)amount of decomposition
C)amount of biomass
D)carbon uptake by producers
2

When plotted graphically, the net primary productivity and AET exhibit a negative relationship.
A)TRUE
B)FALSE
3

Research involving alpine tundra meadow plants indicates that despite extremes of temperature and moisture, is the main nutrient limiting primary productivity.
4

In freshwater lake ecosystems, __________ controls rates of primary productivity.
A)density of herbivores
B)size of depth of the lake
C)distance from the equator
D)nutrient availability
E)b and d are correct
5

Studies indicate that flasks of algae with added nitrate showed increased chlorophyll a while those with added phosphate showed no change in chlorophyll a.
A)TRUE
B)FALSE
6

When piscivores, such as large mouth bass, are increased in an ecosystem, increase as a result of reduced feeding pressure.
7

If the calculated t statistic is less than the critical value of t, the null hypothesis is .
8

In the experiment involving two populations of caddisflies from 2 different streams, we reject the null hypothesis that the biomass is the same because _________.
A)our calculated value of t was greater than the critical value
B)our calculated value of t was less than the critical value
C)the P value was greater than 1
D)the degrees of freedom were pooled
9

The distribution of energy across trophic levels in most lakes is shaped like a .





To learn more about the book this website supports, please visit its Information Center.
(c)2005 McGraw-Hill Higher Education
Any use is subject to the Terms of Use and Privacy Policy.
McGraw-Hill Higher Education is one of the many fine businesses of The McGraw-Hill Companies.


EcologyOnline Learning Center

Home > Chapter 18 > Practice Quizzing