Wetlands are generally classified by their vegetation. Wetlands dominated by trees and shrubs are ________ and wetlands dominated by grasses and sedges are ________.
A. marshes; swamps
B. bogs; swamps
C. swamps; marshes
D. marshes; pine savannas
Answer: C
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Schleiden and Schwann stated the "cell theory," which in its modern form says:
A. all organisms are composed of one or more cells, all cells require oxygen and all cells arise by division of other cells. B. all organisms are composed of one or more cells, all cells are the smallest living things and all cells arise by division of other cells. C. all organisms are composed of one or more cells, all cells arise spontaneously and all cells vary in size and shape. D. all cells will arise spontaneously, all cells require oxygen and all cells are composed of one or more cells.
Which of the following tissue types is specialized to conduct electrical signals?
A. nervous B. muscular C. epithelial D. connective E. Both nervous and epithelial tissue are correct
Which of the following can be changed based
on new evidence? a. hypothesis b. theory c. prediction d. experiment e. all of these
In what way are single-celled slime mold amoebas and individual honeybees (social insects that live in colo-nies) alike?
a. Signals cause them to aggregate though they usually live alone. b. They are both examples of loss of complexity. c. Individuals always live in groups. d. Some individuals give up independent replication in the larger group.