A certain species of flea drinks only the blood of elephants. How would you best describe this flea's trophic level?
A) primary consumer B) secondary consumer
C) decomposer D) producer
Answer: B
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Form refers to ________, and function refers to ________.
A. physiological actions; environmental actions B. anatomical structure; physiological actions C. physiological actions; anatomical structure D. anatomical structure; environmental actions
Based on the graph of the mixed culture, what can you determine about the niche for each
individual species?
a. There is a large amount of niche overlap. b. There is minimal niche overlap. c. Competition for resources is partitioning the available niches. d. Intraspecific competition is reducing niche overlap.
Any factor that can contribute to the conversion of a healthy cell into a cancerous one is known as
A) a tumor. B) a carcinogen. C) a growth factor. D) regulatory genes. E) a growth inhibitor.
Independent assortment refers to which of the following statements?
A) The pole that any one chromosome moves toward is completely independent of the movement of the other 45 chromosomes in humans. B) The position where crossing over occurs is random. C) The sperm that fertilizes the egg is selected at random. D) A maternal chromosome may move toward either pole while the paternal homologue moves toward the other. E) None of the choices is correct.