The seeds of many plant species are dispersed by a harmless temporary attachment to an animal's fur or feathers. This form of dispersal is known as
A. ectoparasitism.
B. amensalism.
C. mutualism.
D. phoresy.
E. trophic mutualism.
D. phoresy.
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In atherosclerosis,
a. the lumen of the artery is narrowed b. the arterial walls fill with fibrous connective tissue. c. lipids in the bloodstream become embedded in the walls of the endothelial lining. d. a fibrous net covers the entire abnormal area. e. all of these occur.
Activated thrombin makes this protein change
A) fibrinogen B) agglutinate C) plasmin D) prothrombin
Cotransport systems directly provide energy for active transport of solutes
__________________ Indicate whether the statement is true or false.
Researchers can deliver genes into plants by using ____.
A. PCR B. DNA sequencing C. electric or chemical shocks D. gel electrophoresis E. DNA segmentation