Almost all houseplants are clones that have been grown from ____ of a parent plant
a. Seeds
b. cuttings
c. suckers
d. grafts
e. fruits
ANSWER: b
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According to the acid-growth hypothesis, auxin works by _____
A) dissolving sieve plates, permitting more rapid transport of nutrients B) dissolving the cell membranes temporarily, permitting cells that were on the verge of dividing to divide more rapidly C) changing the pH within the cell, permitting the electron transport chain to operate more efficiently D) increasing wall plasticity and allowing the affected cell walls to elongate E) greatly increasing the rate of deposition of cell wall material
Among the cultural behaviors observed in wild chimpanzees is
A. stone tool making B. termite fishing C. lemur hunting D. All of the above
List the properties of water.
What will be an ideal response?
The conversion of nitrate (NO3-) to nitrogen gas (N2) is called
A. photosynthesis. B. denitrification. C. nitrification. D. ammonification. E. nitrogen fixation.