Is it true that soil organisms can improve soil tilth, preserve soil nutrients, and reduce a growers
work?
Indicate by YES (Y) or NO (N).
Question 2Is nitrogen fixation the process by which certain microorganisms absorb ammonium and convert it to
nitrogen that plants can use?
Indicate by YES (Y) or NO (N).
Question 3Is it true that algae exist in water and soil?
Indicate by YES (Y) or NO (N).
Question 4Does the burrowing of worms, ants, and larger soil mammals mix soil layers and slow the aging of a
mature soil?
Indicate by YES (Y) or NO (N).
Question 5Is it true that the decay of organic matter is an important role of microorganisms?
Indicate by YES (Y) or NO (N).
Question 6Ways to manage soil organisms include all of the following EXCEPT:
a. inoculation
b. improving soil conditions
c. controlling harmful organisms
d. tillage practices
Question 7Which of the following is NOT a benefit of a Mycorrhizae symbiotic relationship with plant roots?
a. Better root absorption of water and some minerals and elements
b. Resistance to nematodes
c. Glomalin production that enhances aggregating
d. Longer rootlet life
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