Which of the following convert soil ammonium to nitrate?
A) nitrifying bacteria
B) ammonifying bacteria
C) mycorrhizae
D) nitrogen-fixing bacteria
Answer: A) nitrifying bacteria
You might also like to view...
A mature, unfertilized ovule in an angiosperm is the result of _____
A) a single meiotic division B) a single mitotic division C) both meiotic and mitotic divisions D) mitosis from the megaspore mother cell E) differentiation from the suspensor tissues
Clostridium botulinum and Bacillus cereus are important disease-causing microorganisms of food which cause ________.
A. cancers B. infections C. intoxications D. birth defects
The biological species concept relies mainly on ________ to define a species.
A. reproductive isolation B. the presence of analogous traits C. comparative biochemical analysis D. morphological differences
What is the function of the lymphatic system?
A. To aid in the body's defenses. B. To return protein to the circulation. C. To carry bacteria and dead blood cells to the lymph nodes and spleen. D. To transport fats absorbed from the intestine. E. All of the choices are correct.