The outermost whorl of a flower typically consists of one or more ____
a. petals
b. carpels
c. stamens
d. receptacles
e. sepals
ANSWER: e
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Which of the following statements about great apes is correct?
A. Orangutans are more closely related to chimpanzees than to gorillas. B. Bonobos are more closely related to humans than to orangutans. C. Gorillas are more closely related to humans than to orangutans. D. Bonobos are more closely related to humans than to chimpanzees.
A reaction that releases energy is ________.
A. endergonic B. impossible C. None of the choices are correct. D. exergonic
Which of the following is false concerning
stem cells? a. They are undifferentiated cells. b. They arise from a fertilized egg. c. They can be coaxed to differentiate. d. They are obtained from a portion of a plant body. e. They may help mend damaged tissue
Which of the following is true concerning postnatal development?
a. Infancy is defined as the first two years of life after birth. b. Senescence results in increased hormone secretion. c. Postnatal development occurs before birth. d. In general, boys experience their pre-adolescent growth spurt later than girls. e. Early childhood is a time of rapid cell division in nerve cells.