Multiple Choice
Compared to the bulk soil in which the earthworms live,earthworm casts contain ____.
A) less of most plant-available nutrients
B) more nitrogen but less of other plant-available nutrients
C) more of most plant-available nutrients
D) more sand and silt
E) less organic matter
Correct Answer:
Verified
Correct Answer:
Verified
Q31: This (these)group(s)of microorganisms usually predominate(s)in sandy,acid soils.<br>A)actinomycetes<br>B)bacteria<br>C)fungi<br>D)both
Q32: In which situation are the actinomycetes likely
Q33: Organisms which use carbon dioxide or carbonates
Q34: In nature,beneficial mycorrhizae form with the roots
Q35: An organism that subsists by eating predators
Q36: Mycorrhizae do not normally kill their host
Q37: Where conditions are favorable,earthworms are known to
Q38: Of all the groups of soil organisms,bacteria
Q39: Disease suppressive soil often results from _.<br>A)Fumigation
Q40: Mycorrhizae involve a symbiotic combination of certain