Endodermis cells of the root secrete a waxy
substance on
a. all of their walls.
b. the walls that lead into the xylem.
c. the walls adjacent to the phloem only.
d. walls of the endodermis that touch each
other.
e. their chloroplasts
D
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A. true B. false
Which of the following statements is NOT
TRUE concerning an electron that has absorbed a photon? a. It moves to a higher energy level. b. It becomes more stable. c. It quickly returns to its original energy level. d. It may emit energy. e. It becomes excited
What value do mortality rate curves end on?
A) 0 B) 1.0 C) however many individuals are dead D) the percentage of the population that dies in the last time period
Prolactin appears to help us recognize familiar faces and trust other people. Indicate whether the statement is true or false