Members of the genus Rhizobium
A. infect broad-leaved plants and cause crown gall disease.
B. are important nitrifying bacteria that convert nitrite to nitrate.
C. are free living soil bacteria that fix nitrogen.
D. grow symbiotically in root nodules of legumes where they fix nitrogen.
Answer: D
You might also like to view...
What type of inheritance pattern is exhibited by the trait being analyzed in this pedigree?
a. autosomal dominant b. autosomal recessive c. X-linked recessive
Which of the following is the key regulatory enzyme in glycolysis?
a. phosphofructokinase b. pyruvate dehydrogenase c. citrate synthase d. isocitrate dehydrogenase e. PEP carboxylase
Which of the following is the most effective means of treating or even curing sickle-cell disease?
A. Bone marrow transplants B. Antibiotics C. Gene therapy D. Blood transfusions
Make a sketch showing how nondisjunction in meiosis can result in Down syndrome. What will be an ideal response?