Which of the following characteristics is
common to bryophytes and to seedless
vascular plants?
a. xylem conduction cells
b. sporophyte predominant
c. gametophyte predominant
d. water required for fertilization
e. true roots
D
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The principle behind salt or sugar preservation is to
A) introduce a mechanical barrier to microbial invasion. B) reduce water activity (aw). C) introduce a microbicide in anticipation of contaminating bacteria or fungi. D) accomplish all of the described functions depending on the food being preserved.
Four of the five answers listed below are members of the same kingdom. Select the exception
a. Archaea b. protozoa c. charophyte d. dinoflagellate e. euglenoid
Normal human body cells contain how many chromosomes?
a. 22 b. 23 c. 46 d. 44 e. 42
Which layer of the skin lacks connective tissue?
A) epidermis B) dermis C) hypodermis D) hair