All woody plants are:a
annuals.
b. biennials.
c. perennials.
d. deciduous.
e. evergreen.
C
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Which of the following animals is correctly paired with its feeding mechanism?
A) lion â€" substrate feeder B) baleen whale â€" fluid feeder C) aphid â€" suspension feeder D) clam â€" substrate feeder E) snake â€" bulk feeder
Adaptive immunity occurs when
A) death results from pathogen infection. B) the innate immune response fails to eliminate pathogens in the body. C) virulent pathogen infections persist in the body after the initial innate defense response. D) the innate immune response fails to eliminate pathogens in the body and virulent infections persist after the initial innate defense response.
Fossil evidence places the origin of angiosperms in the early Cretaceous period, at least 130 million years ago. By 100 million years ago, all of today's major lineages of angiosperms were in place. Angiosperms make up 95% of all modern plant species. Which of the following may help explain the rapid success of angiosperms?
a. Use of the wind to disperse pollen and seeds b. Flowers and fruits help protect and disperse both pollen and seeds c. Use of the wind to disperse spores d. Use of water to disperse pollen and seeds e. Animals eating the plants helped to disperse both pollen and seeds
The problems associated with slash-and-burn agriculture are most closely related to:
a. greed by international corporations. b. overpopulation of indigenous people. c. consumption by highly developed countries. d. cattle ranching. e. timber for export.