The bacterium Agrobacterium tumefaciens

a. forms a nitrogen-fixing symbiosis with plants.
b. forms a symbiotic relationship with plant roots.
c. causes plant wilt.
d. causes crown gall disease.


Answer: D

Biology & Microbiology

You might also like to view...

Diseases that are good candidates for eradication have

A) only a human reservoir. B) no asymptomatic phase. C) an environmental reservoir. D) only a human reservoir and no asymptomatic phase.

Biology & Microbiology

Which of the following is true of anorexia

nervosa?

a. it is caused by environmental and genetic factors combined b. bones are weakened from loss of calcium c. iron- deficiency anemia is common d. hear muscle is weakened e. all of these are true of anorexia nervosa

Biology & Microbiology

Is the average ecological footprint getting larger or smaller globally? What will be an ideal response?

Biology & Microbiology

Which of the following are functions of the stomach?

A) digestion of proteins B) control movement of food into the small intestine C) storage of food D) absorption of protein and carbohydrates

Biology & Microbiology