Four of the five choices listed below are features of
the pericycle. Select the exception.
a. outermost tissue in the vascular column
b. origin of branch roots
c. located in the root but not in the stem
d. site for food storage
e. located inside the endodermis
Answer: d
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In establishing paternity by DNA fingerprinting, what proportion of microsatellite repeat alleles in a child come from the father?
A) only those on the X chromosome B) 1/4 C) 1/2 D) 3/4
Humans cannot survive at sea by drinking salt water. However, marine vertebrates such as sea turtles and various sea birds can survive by drinking salt water. What do they have that humans do not?
A. kidneys that are extremely good at producing a concentrated urine. B. body fluid concentrations that are similar to or greater than those of seawater. C. the ability to secrete salts and wastes into their intestinal contents like an insect. D. They use ammonia as their primary nitrogenous waste. E. salt glands.
The accumulation of glucose 6-phosphate inside a bacterial cell via phosphorylation of glucose is an example of
A) facilitated diffusion. B) group translocation. C) osmosis. D) plasmolysis. E) diffusion.
What is the significance of the homeobox sequence studied in animal species?
A) Certain genetic instructions vary based on structural differences. B) Certain genetic instructions vary based on phyla. C) Certain genetic instructions for development have changed a great deal over time. D) Certain genetic instructions for development have changed very little over time.