Multiple Choice
Azotobacter
A) are the chief suppliers of fixed nitrogen in grasslands.
B) form symbiotic associations with algae.
C) have a very low respiratory rate.
D) are methanogens.
E) are the chief suppliers of fixed nitrogen in grasslands AND form symbiotic associations with algae.
Correct Answer:
Verified
Correct Answer:
Verified
Q2: Turning inorganic carbon into organic carbon is
Q3: Mycorrhizae are a symbiotic association of<br>A) bacteria
Q4: Protozoa, algae, and fungus are typically found
Q5: Nitrogen is<br>A) an important constituent of carbohydrates
Q6: Oligotrophic waters are usually hypoxic.
Q8: Many orchids require fungi for seeds to
Q9: The zone of soil that surrounds the
Q10: The region of the earth inhabited by
Q11: Sulfur occurs in all living matter primarily
Q12: Geosmins are<br>A) a strain of Bacillus.<br>B) nitrogen-fixing