Photoperiodism is the
a. duration of flowering in a plant.
b. amount of light needed by a plant to exhibit
normal growth.
c. response of a plant to the duration of light and
darkness.
d. light phase of photosynthesis during which
photolysis of water occurs.
e. opposite of photorespiration
Answer: c
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An ecologist who studies the distribution of a frog species along a latitudinal gradient is performing a(n) ____
experiment.
a. natural b. experimental c. predictive d. lab e. modeling
In the accompanying figure, an asexually reproducing individual is indicated by _____
a. 1 b. 2 c. 3 d. 4 e. 5
Two sister chromatids are held together at the
A. autosome. B. telomere. C. centromere. D. spindle. E. aster.
Which of the following statements concerning plasma cells is FALSE?
A) They live for many years and function as memory cells. B) They are descended from activated B cells. C) They can produce large quantities of antibodies on a daily basis. D) They secrete a single type of antibody molecule specific for a single epitope. E) The antibodies they produce can remain in circulation for weeks.