The "stress hormone" involved in stomatal closure during water stress is:
a. abscisic acid.
b. auxin.
c. cytokinin.
d. ethylene.
e. gibberellin
A
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Reproductive cloning is used to produce large amounts of mammalian proteins from transgenic agricultural animals such as cattle
Indicate whether the statement is true or false
Which of these situations regarding phloem sources and sinks is not correct?
A. The root of a carrot plant is a source. B. Young leaves are sinks. C. A growing pumpkin is a sink. D. In a seedling, the cotyledons would be sources. E. During autumn, deciduous tree roots would be a sink.
The largest bone in the body is the
a. femur. b. humerus. c. tibia. d. fibula. e. hipbone.
Which test would be best to determine the actual genotype in an HLA matching?
A) enzyme-linked immunosorbent assay B) serological testing C) polymerase chain reaction D) flow cytometry