Which of the following describes the fate of most of the water taken up by a plant?
a) It is used as a hydrogen source in photosynthesis.
b) It is used as a solvent.
c) It makes cell elongation possible.
d) It is lost during transpiration.
e) It is used to keep cells turgid.
Ans: d) It is lost during transpiration.
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Stomata
a. are found in the root cells. b. may be found scattered anywhere throughout the plant. c. allow the movement of gases into and out of plants. d. prevent the loss of water from plants. e. remain open at all times
Mendel tested for heterozygotes by using
A. true-breeding cross. B. monohybrid cross. C. test cross. D. dihybrid cross.
Proteins associated with DNA in the nucleus of eukaryotic cells are called ________.
Fill in the blank(s) with the appropriate word(s).
The form of nitrogen most likely to be absorbed from the soil by plants is
A. nucleic acids. B. nitrogenous wastes. C. nitrous oxide gas. D. nitrogen gas. E. nitrite/nitrate ions.