Which of the following statements about the pericycle is false?
a. It gives rise to branch roots.
b. It is a single layer of cells inside the endodermis.
c. It is composed of parenchyma cells.
d. Upon maturation, its cells lose their ability to divide.
e. It is involved in the formation of lateral meristems.
D
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Ediacaran organisms
A. lived from about 600 million years ago to about 540 million years ago. B. have been thought to be ferns, worms, or fungi. C. All of the answer choices are correct. D. lived during the Precambrian period. E. did not leave any modern-day descendants.
Recent data indicate what regarding forests in eastern North America?
A) a steady increase in forest since the late 1800s B) no change over the past 200 years C) no change in the past 50 years D) a decline in forested area in the past 50 years
cDNA libraries are desirable for the expression of eukaryotic genes in prokaryotes because a. prokaryotes have no mRNA. b. prokaryotes cannot remove introns. c. prokaryotes cannot remove exons. d. prokaryotes do not have the nucleotide thymine. e. prokaryotes can only use uracil.
What will be an ideal response?
Which new technology has advanced our understanding of large scale ocean features such as ocean currents?
A) Marine labs B) ROVs C) AUVs D) Remote sensing