Which type of life history produces a larval stage that feeds on a different food source than the adult stage?
A. viviparous
B. oviparous
C. ovoviviparous
D. Both ovoviviparous and viviparous.
E. Both viviparous and oviparous.
Answer: B
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The first group of plants with flowers were:
a. algae b. fern allies c. ferns d. angiosperms e. gymnosperms
Which group of land plants is most restricted to moist environments?
A) Vascular plants B) Bryophytes C) Tracheophytes D) Anthophyta E) Angiosperms
Which of the following is an example of a tissue?
a. mammal b. hamstring c. liver d. xylem
Drug-resistant populations of microbes arise when
A) exposure to drugs selectively kills sensitive cells, allowing overgrowth of resistant cells. B) exposure to drugs causes mutations that produce resistance. C) resistant cells become numerous in a population due to their greater vigor. D) the patient becomes immune to the drug. E) synergy between medications occurs.