An analysis of plasma or nuclear membrane
would yield
a. cellulose and chitin.
b. suberin and cutin.
c. phospholipids and proteins.
d. microtubules and microfilaments.
e. phospholipids and nucleic acids.
C
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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
Antidiuretic hormone promotes water conservation by increasing the levels of ______ in the collecting ducts of the kidney.
A. aquaporins B. G-protein coupled receptors C. vasopressin D. Na+/K+ ATPase E. Na+/glucose symporters
This young seedling
a. is a monocot. b. is a eudicot. c. is a magnoliid. d. could be either a monocot or a dicot. e. is none of these.
Which of the following best explains why modern seedless vascular plants are confined largely to wet or humid environments?
a. They require soil. b. They require reflected sunlight. c. They require symbiotic bacteria in the water. d. They require external water for reproduction.