Which structure or compartment is not part of the plant's apoplast?
A) the lumen of a xylem vessel
B) the lumen of a sieve tube
C) the cell wall of a mesophyll cell
D) the cell wall of a transfer cell
E) the cell wall of a root hair
Ans: B) the lumen of a sieve tube
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Contraction of the diaphragm allows for expiration
a. true b. false
Predict the microscopic appearance of cells in the leaf tissue of a wilted plant.
What will be an ideal response?
What is happening here? Water + NaCl ® Na+ + Cl-
A. A solution of ions is prepared. B. The dissociation of ions. C. Movement of an electron from the outermost energy level of Na to the outermost energy level of Cl. D. All the choices are true.
We know that the anthropogenic production of CO2 represents the single largest contributor to the greenhouse effect. What is another greenhouse gas that is also increasing as the result of human activities?
A) methane B) nitrogen oxides C) chlorinated hydrocarbons D) ozone E) all of the above