The movement of materials already in the phloem can be described using the term(s):
a. source-to-sink only
b. pressure flow only
c. cohesion only
d. both active transport and cohesion
e. both source-to-sink and pressure flow
e
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The process in which genes move from one chromosome to another is called ____________________
Fill in the blank(s) with correct word
Half of all human tumor cells have been discovered to contain a mutation in the which of the following genes?
a. p21 b. p34 c. p47 d. p53
Fatty pads
What will be an ideal response?
When one tallies the species in a community by numbers of individuals, one typically finds that:
A) all species have about the same number of individuals. B) most species are dominant, whereas a few others are represented by relatively few individuals. C) a few species are dominant, whereas most others are represented by relatively few individuals. D) there is no general pattern in the relative abundances of species.