Sieve tubes are different from vessel members
because they
a. do not have nuclei.
b. are not connected to each other.
c. are alive at maturity.
d. conduct minerals.
e. fit all of these descriptions.
C
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A pink-pigmented facultative methylotrophic bacterium is LEAST likely to be a classified as a member of
A) Rhizobiales. B) Rhodobacter. C) Methylobacterium. D) Proteobacteria.
Which of these is the best example of an umbrella species?
A. northern spotted owl. B. brown tree snake. C. humpback whale. D. giant panda. E. Gopher tortoise.
In C4 plants, which of the following events of
photosyntesis takes place first?
a. carbon from carbon dioxide is fixed by an enzyme that does not use oxygen b. carbon from carbon dioxide is fixed by rubisco c. glucose is produced d. glucose is converted into sucrose e. RuBP splits into two PGA molecules
Habitats that are variable in time or short lived will favor ________-strategists
Fill in the blank(s) with correct word