The oxygen produced by a plant comes most directly from
A. CO2.
B. H2O.
C. C6H12O6.
D. glyceraldehyde-3-phosphate.
B. H2O.
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How is the color of each of the major photosynthetic pigments (chlorophyll a, chlorophyll b, carotenes, and xanthophylls) related to the light wavelengths absorbed by that pigment?
What will be an ideal response?
What is the function of inhibin?
A. It binds with testosterone and inhibits it. B. It inhibits the development of male secondary sexual characteristics. C. It binds with the Sertoli cells and inhibits the production of sperm. D. It inhibits mitosis. E. It inhibits the secretion of GnRH.
New species that arise in the same physical area as its parent species is called sympatric speciation.
Indicate whether the statement is true or false.
Figure 17.5
As the trees in England become less sooty due to pollution controls on factories, which of the moths in the accompanying figure will be selected against?
A. The dark moth on the dark tree B. The light moth on the light tree C. All of the light moths equally D. The dark moth on the light tree E. All of the dark moths equally