Stomata are opened when ____ guard cells and they become ____
a. active transport pumps H+ into; turgid
b. active transport of H+ stops in; flaccid
c. active transport pumps H+ out of; turgid
d. active transport pumps H+ into; flaccid
e. active transport of H+ stops in; turgid
C
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Which of the following phrases INCORRECTLY completes the following statement? The Hox complexes of vertebrates
A. encode the same genes as those found in the Antennedepia and bithorax complexes. B. follow the colinearity rule. C. are arranged in groups of four complexes in all organisms that possess them. D. determine the anteroposterior axis. E. suggest there is a basic body plan that is followed by all multicellular organisms.
What is the current concentration of carbon dioxide in the atmosphere?
A. 100 parts per million B. 140 parts per million C. 42 parts per thousand D. 380 parts per million E. 1150 parts per million
Identify three different types of modified leaves and list the function of each. What will be an ideal response?
Which of the following is NOT an example of a good or service provided by plants that directly benefits human society?
A. discovery of new medicines B. horticultural therapy and stress relief C. dietary source of vitamins, minerals, and fiber D. source of oxygen and sink for carbon dioxide E. All of the above are benefits plants provide to human society.