What element is considered an essential macronutrient for plants?
a. zinc
b. uranium
c. iron
d. nickel
e. carbon
ANSWER: e
Biology & Microbiology
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The elongation of stems is stimulated by
A. auxin only. B. gibberellin only. C. ethylene only. D. auxin and gibberellin. E. auxin and ethylene.
Biology & Microbiology
What is the structure labeled B in the accompanying figure?
a. cytoplasm b. nucleoid c. plasma membrane d. capsule e. pilus
Biology & Microbiology
The condition in which it takes larger or more frequent doses to produces the same effect is drug ____
a. tolerance b. addiction c. habituation d. concealment e. depression
Biology & Microbiology
Members of phylum Ctenophora are diploblastic but lack cnidocytes
____________________ Indicate whether the statement is true or false.
Biology & Microbiology