Explain what happens when NaCl and other salts build up in soils?
What will be an ideal response?
ANSWER: The buildup of salts decreases soil water potential. Reducing soil water potential can lead
to plant wilting because the movement of water from the soil into the roots and up to the
leaves depends on a water potential gradient. When soil water potential is at the wilting
point, leaves will wilt.
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H. influenzae can be distinguished from H. aegyptius by its _____ test for _____
a. negative; sucrose fermentation b. negative; lactose fermentation c. positive; catalase d. positive; xylose fermentation
Rodents, marsupials, and nonhuman primates are all reservoirs for which Schistosoma species?
a. S. japonicum b. S. haematobium c. S. mansoni d. Schistosoma intercalatum
The phase of mitosis in which the nuclear envelope breaks into small pieces is
A. D, which is anaphase. B. B, which is prometaphase. C. B, which is prophase. D. C, which is metaphase. E. C, which is telophase.
The clitoris comprises the:
A. labia minora and labia majora. B. fourchette and perineum. C. shaft and glans. D. urethra and introitus.