An insect whose larval and adult forms occupy different habitats and consume different food probably undergoes ____
metamorphosis.
a. no
b. incomplete
c. complete
d. pupal
e. instar
ANSWER: c
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Which statement describes a difference between meiosis I and meiosis II?
a. DNA is replicated during meiosis II but not during meiosis I. b. Homologous chromosomes separate during meiosis I; sister chromatids separate during meiosis II. c. Meiosis I produces diploid cells; meiosis II produces haploid cells. d. Chromosomes align along the equatorial plane of the cell in meiosis I but not in meiosis II. e. Crossing-over occurs during meiosis II but not during meiosis I.
To which group of arthropods do spiders belong?
a. chelicerates b. crustaceans c. myriapods d. insects e. none of the above
Which of the following does not occur during early cleavage of a frog zygote?
A) The developing cell undergoes mitosis. B) The nuclear-to-cytoplasmic ratio of the two resulting cells increases. C) The ratio of surface area to volume of the two resulting cells increases. D) The embryo grows significantly in mass. E) The developing cell undergoes cytokinesis.
Histamines
a. are produced by phagocytes to cause mucous production. b. are produced by mast cells to cause prostaglandin production. c. are produced by complement to attract phagocytes. d. are produced by mast cells to cause capillary dilation. e. are produced by complement to cause capillary constriction.