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Questions (4-5)
You let your neighbor shoot coyotes on your ranch in Arizona. After all the coyotes are gone, you notice that the rabbit population increases dramatically. Along with this you notice that the rabbits have consumed most of the grasses and forbs, and the biomass and diversity of plants drops dramatically. A few years later, your neighbor moves away, and within a few years the coyote population recovers, the rabbit population declines, and the biomass and diversity of grasses and forbs are back up to what they used to be.
4) The rabbits could be described as:
a. primary producers
b. primary consumers
c. a keystone species
The coyotes in the above example could be discribed as
a. primary producers
b. primary consumers
c. a keystone species
d. b and c
Questions (6-10) You place an air-tight chamber on a leaf in sunlight and measure the change in CO2 and H2O concentrations in the air in the chamber.
6) The rate of change in CO2 concentration of the air in the chamber provides a measure of:
a. transpiration
b. gross photosynthesis
c. net photosynthesis
d. respiration
The rate of change in H2O concentration of air in the chamber provides a measure of:
a. transpiration
b. gross photosynthesis
c. net photosynthesis
d. respiration
If the leaf has a high photosynthetic rate, the CO2 concentration of air in the chamber will
a. increase
b. decrease
If the leaf has a high phosotsynthetic rate, the H2O concentration of air in the chamber will
a. increase
b. decrease
If you cover the outside of the chamber with an opaque sheet so that the leaf inside it is in the dark, the rate of change of CO2 concentration of air in the chamber would be a measure of
a. transpiration
b. gross photosynthesis
c. net photosynthesis
d. respiration
3 answers
4. c 5. a 6. c 7. b 8. a 9. b 10.c
4. B
5. D
6. C
7. D
8. B
9. B?
10. D
5. D
6. C
7. D
8. B
9. B?
10. D
1 answer