Animals trapped and digested by "carnivorous" plants such as the cobra lily are used primarily as ____
a. an energy supplement during winter months
b. a carbon source for the plant
c. a nutrient supplement in nutrient-deficient environments
d. food for bacteria and fungi that grow symbiotically with the plant roots
e. an energy supplement for small plants growing in shady areas
ANSWER: c
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A sudden natural catastrophe resulting in massive die-offs would be categorized as a density-________ limiting factor.
A. autonomous B. independent C. dependent D. reliant
Estuaries tend to be well supplied in the following limiting nutrient(s) of the open ocean:
a. phosphorus. b. nitrogen and silica. c. phosphorus and silica. d. nitrogen and phosphorus. e. carbon and oxygen.
Nucleic acids are polymers of ________ monomers
A) monosaccharide B) fatty acid C) DNA D) nucleotide
What features of GM crops make them appealing to farmers? Select all that apply.
a. drought tolerance b. less herbicide use c. increased food yields d. insect resistance