The landing platform for pollen in flowering plants is the
a. filament.
b. stigma.
c. anther.
d. style.
e. ovary.
B
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Early mammals differed from reptiles in many respects, including:
A) feeding their young milk. B) the number of legs used for walking. C) eating other organisms for food. D) internal versus external fertilization.
Consider solution A (pH 6) and solution B (pH 9). Which of the following statements is CORRECT?
A) Solution A is 3 times more acidic than solution B. B) Solution A is 300 times more acidic than solution B. C) Solution B is 1,000 times more alkaline (basic) than solution A. D) Solution B is 3,000 times more alkaline (basic) than solution A.
Diarrhea, nausea, and vomiting are signs and symptoms associated with which of the following viruses?
A. coxsackie A B. enterovirus C. rhinovirus D. echovirus E. norovirus
Methylation regulates transcription by ____
a. adding a methyl group to cytosine bases of DNA b. adding a methyl group to cysteine residues on RNA polymerase II c. adding a methyl group to cysteine bases of DNA d. adding a methyl group to cytosine residues on RNA polymerase II e. interfering with the chromatin remodeling process