In the experiments by Arnold, et al., why were some leaves on a cacao plant treated with endophytes and others were not?
A. to control the amount of Phytophthora that spread to other plants
B. to provide a control for comparison of treated and untreated
C. to reduce the amount of endophyte spores that were needed
D. endophytes spread from one leaf to another
E. to reduce the number of plants that were needed
B. to provide a control for comparison of treated and untreated
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If a plant species exhibits maternal inheritance for leaf pigmentation, what is the phenotype of the parents of a variegated (green and white leaves) plant?
A. The maternal plant must be white and the paternal plant must be green. B. The maternal plant must be green and the paternal plant must be white. C. The maternal plant must be variegated and the paternal plant can be any color. D. Both the maternal and paternal plant must be variegated. E. The maternal plant must be variegated and the paternal plant must be white.
These are members of the phylum Cnidaria
a. sponges b. comb jellies c. sea anemones d. snails e. clams
Streptococcal pharyngitis, commonly called "strep throat," is caused by ________.
A. Streptococcus trachius B. Streptococcus pyogenes C. Streptococcus pneumoniae D. Streptococcus mutans
Although a computer is not alive, it shares which fundamental property of life?
A. reproduction B. homeostasis C. energy utilization D. heredity E. cellular organization