Which theory of water transport in xylem can also be used to explain the primary movement of water in nonvascular plants such as mosses?

A) cohesion-tension
B) capillarity
C) proton pump
D) air pressure


Answer: B

Biology & Microbiology

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Plants that have systemic acquired resistance (SAR) to a specific virus will be able to resist future infections whether or not the plant experiences necrosis in the first infection

A. true B. false

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Predators can switch to alternative prey when a prey species is low in abundance as is shown in ____

a. type I response b. type II response c. type III response d. types I and III e. types I, II and III

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The hormone that induces contractions that lead to birth is ____

A. estrogen D. melatonin B. prostaglandin E. progesterone C. oxytocin

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Refer to Figure 26-3. At point 4, several Chlamydomonas cells are “packaged” in a surrounding membrane. Which of the following statements concerning those cells is FALSE?


a. They are gametes.
b. They were produced by mitosis.
c. They are part of the negative (?) strain.
d. They are part of the haploid generation.
e. They can also be considered zoospores

Biology & Microbiology