Which group of organisms are bilaterally symmetrical and posses a mantle?
a. Annelids
b. Platyhelminthes
c. Planarians
d. Mollusca
e. Porifera
d
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Which technique(s) is/are used to help identify and classify bacteria?
A. Microscopic examination B. Culture characteristics C. Biochemical tests D. Nucleic acid analysis E. All of the choices are correct.
Often in complete dominance, the recessive allele codes for a nonfunctional ________
Fill in the blank(s) with correct word
Studies of a soybean plant (Glycine max) and the bacterium Bradyrhizobium japonicum have shown that the tip of a root hair curls toward the bacteria as a response to which of the following?
a. a flavonoid released by soybean roots b. nod gene products produced by soybean roots c. nod gene products produced by the bacterium d. nitrogen fixation by the bacterium
ion movement in plants
What will be an ideal response?