When cells of the vascular cambium divide, they produce xylem toward the outside
____________________ Indicate whether the statement is true or false.
F, phloem
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Which of the following methods to enumerate cells often requires specialized staining to observe non-pigmented bacteria?
A) spectrophotometry/turbidity B) spread-plating C) microscopy D) spread-plating, turbidity, and microscopy
Testing of a hypothesis is called a(n):
A. variable B. experiment C. prediction D. conclusion E. control
Plasmodium, the cause of malaria, undergoes multiple mitoses before the release of uninucleate daughter cells called
a. gametocytes b. schizonts c. coencytes
Why can scratching or chipping the seed coat speed up the germination of hard-coated seeds like alfalfa?
A. The mechanical stress activates hydrolytic enzymes. B. Carbon dioxide can enter the seed and stimulate photosynthesis. C. Water and oxygen can enter the seed to reach the embryo more quickly. D. Damage to the seed coat triggers the aleurone layer to release amylase. E. Bacteria or fungi can enter the seed and release growth factors.