Which of the following transmission modes is available for plants?
A) direct
B) intermediate vector
C) multiple hosts and stages
D) all of the above
D
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On a road trip in the American West, you see a prairie dog town – a colony of related animals. There are hundreds of prairie dogs, but only a subset are scanning for predators at any time. If a predator is spotted, a prairie dog barks to warn the rest of the colony, who dart into their burrows. Prairie dogs have a complex vocabulary of alarm calls, which differ to indicate hawks, coyotes, or humans. What feature of group living is best illustrated by the prairie dog alarm system?
A. the many-eyes hypothesis B. the geometry of the selfish herd C. reciprocal altruism D. haplodiploidy E. optimality theory
Which is an organic molecule?
a. carbon dioxide (CO2) b. water (H2O) c. methane (CH4) d. hydrochloric acid (HCl) e. oxygen (O2)
Hepatitis B virus is an example of a DNA virus that uses reverse transcriptase in its replication cycle.
Answer the following statement true (T) or false (F)
What level of taxonomy is Parameciidae Cells rotate while swimming and have oral grooves?
A) Kingdom B) Family C) Phylum D) Genus E) Species