Which of the following characteristics about saprotrophs is NOT true?
A. They are bacteria that decompose large organic molecules.
B. They are viruses that infect plant and fungal cells.
C. Saprotrophs are also called decomposers.
D. They are ecologically important in recycling matter.
Answer: B
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While touring a farm, the farmer tells you that she uses cytokinin to increase crop productivity. But, from biology class you know that cytokinin alone has no effect on parenchyma cells. What other substance is the farmer most likely using in conjunction with cytokinin?
A. auxin B. abscisic acid C. strigolactones D. ethylene E. suberin
Which of the following biomes would you predict to be dependent on fire to prevent succession by trees?
A. desert B. chaparral C. grassland D. deciduous forest E. taiga
Which part of the respiratory system is an air tube held open by a series of C-shaped cartilaginous rings?
A. trachea B. bronchioles C. pharynx D. larynx
________ are a major source of restriction enzymes
A) Plant cells B) Human cells C) Bacteria