Gram-negative nitrogen-fixing bacteria found in association with plant roots are
A. alphaproteobacteria.
B. betaproteobacteria.
C. cyanobacteria.
D. gammaproteobacteria.
E. deeply branching bacteria.
Answer: A
Biology & Microbiology
You might also like to view...
Which mineral is necessary for a plant to develop both nucleic and amino acids?
a. carbon b. magnesium c. nitrogen d. potassium
Biology & Microbiology
_____ are substances that give up hydrogen ions when they dissolve in water, so these substances can lower the pH of a solution and make it acidic (below pH 7)
1.Elements 2.Bases 3.Acids 4.Solvents
Biology & Microbiology
A basilisk lizard can run across the surface of a pond due to a property of water called ________
Fill in the blank(s) with correct word
Biology & Microbiology
Within the phylum apicomplexan, which gametes are motile?
A) Female B) Male C) None of the gametes are motile
Biology & Microbiology