What is the pH of a solution when the number of H+ ions equals the number of OH– ions in the liquid?
a. 0-2
b. 3-6
c. 7
d. 8-10
e. 11-14
c
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Which of the following statements about flowering plants is TRUE?
A. A short-day plant requires nights longer than a certain critical period to trigger flowering. B. A long-day plant requires nights shorter than a certain critical period to inhibit flowering. C. A short-day plant requires daylight of short wavelengths. D. A long-day plant requires long wavelengths during the night. E. A long-day plant requires long days alternating with short days.
The greatest contributor(s) to allopatric isolation is
(are) a. geographic barriers. b. differences in reproductive timing. c. gametic incompatibility. d. hybrid inviability. e. behavioral peculiarities.
Insects have a __________, with many individual
units. Fill in the blank(s) with the appropriate word(s).
A man with type A blood and a woman with type B blood have a child with type O blood. What are the genotypes of the man and woman?
What will be an ideal response?