Root formation in stem cuttings can be improved by the application of ____.
A. synthetic auxins
B. abscisic acid
C. salicylic acid
D. ethylene
E. gibberellin
Answer: A
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For which of the following nutrients does a deficiency not result in leaf chlorosis?
a. Nitrogen. b. Magnesium. c. Iron. d. Zinc. e. Boron.
During which of the following stages do cells of
identical genetic makeup become structurally and functionally different from one another? a. cleavage b. differentiation c. morphogenesis d. metamorphosis e. gastrulation
Imagine that you are managing a large ranch. You know from historical accounts that wild sheep used to live there, but they have been extirpated. You decide to reintroduce them. After doing some research to determine what might be an appropriately sized founding population, you do so. You then watch the population increase for several generations, and graph the number of individuals (vertical axis) against the number of generations (horizontal axis). The graph will appear as
A) a diagonal line, getting higher with each generation. B) an ?S,? increasing with each generation. C) an upside-down ?U.? D) a ?J,? increasing with each generation. E) an ?S? that ends with a vertical line.
A myeloid progenitor cell can differentiate into immune cells of the blood and lymph systems.
Answer the following statement true (T) or false (F)