Tracers are elements that ____.
A. are used in minute amounts in plants
B. can be monitored during biochemical reactions
C. must be inert
D. have an unbalanced electrical charge
E. must have a stable nucleus
Answer: B
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What is the most primitive group of non-vascular plants?
a. Liverworts b. Hornworts c. Ferns d. Mosses
In contrast to most other plant hormones, which hormone is a germination inhibitor?
a. auxin b. gibberellin c. cytokinin d. abscisic acid e. ethylene
Which of the following is true of both xylem transport and phloem transport?
A. Both are passive processes that do not require energy from the plant B. Both involve only living cells C. Both rely on a gradient of water potential D. The direction of flow is usually reversible in both
Suppose that a mistake made during DNA replication in a cell is not corrected, but instead the mutation remains in the single strand where it occurred. Then suppose that after the cell divides, both daughter cells survive, and those cells then go on to have DNA replication, and ultimately cell division. Four cells now exist where there once was one cell. Assume that the mistake was never corrected and that no other mistakes occurred. How many of the four cells will have the mutation in their DNA?
a. three b. two c. one d. none