What is the name given to the fluid removed from the blood but not yet processed by the nephron tubules?
a. urine
b. water
c. urethral fluid
d. filtrate
e. renal plasma
d
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The movement of materials already in the
phloem is described as
a. translocation. b. declining pressure flow. c. cohesion-tension. d. active transport. e. transpiration
Nitrogen is released into the atmosphere by
a. nitrogen fixation. b. denitrification. c. nitrification. d. ammonification. e. decomposition.
Which of the following is NOT a characteristic of the
arctic tundra? a. a perpetually waterlogged soil b. rapid nutrient recycling c. one of the world’s greatest store of carbon d. permafrost e. cool, anaerobic conditions
Based on the principle of parsimony, a cladogram describing a group of species containing which of the following is the best phylogeny estimation?
A. Five synapomorphies and one autapomorphy B. Seven synapomorphies and three autapomorphies C. Six synapomorphies and two autapomorphies D. Eight synapomorphies and four autapomorphies