Xylem
a. involves mainly the shoot system.
b. includes lignin-reinforced cell walls.
c. involves the roots.
d. involve stomata.
e. includes pipelines that conduct water from soil
to leaves.
Answer: e
You might also like to view...
What is the substrate for beta-galactosidase in bacterial screening assays that check for colonies having
recombinant DNA?
a. lactose b. X-gal c. sucrose d. blue azure e. bromophenol blue
The function of the nucleolus is
A. the assembly of ribosome components. B. the assembly of mRNA. C. the transport of material into and out of the nucleus. D. protein synthesis. E. photosynthesis.
Before the evolution of photosynthesis, early cells extracted energy from ____
a. oxygen b. ATP c. NADPH d. water e. methane
Lenski and Travisano compared what happened to the size of cells in 12 replicate lines of E. coli. The results of the experiment graphed in the figure above indicate that:
a. there is a competition for limited resources in nature. b. the average cell volume decreased substantially over the first 2,000 to 3,000 generations of the experiment. c. the average cell volume increased substantially over the first 2,000 to 3,000 generations of the experiment. d. A and B. e. A and C.