In honeybees, if food is closer than 50 m, scouts
A. look for other food.
B. do not perform a dance.
C. perform a waggle dance about the food's location.
D. perform a round dance about predation risk.
E. perform a round dance about the food's proximity.
Answer: E
You might also like to view...
The cardiac conduction system initiates and delivers an electrical impulse that begins in the ________.
Fill in the blank(s) with the appropriate word(s).
For a neuron with an initial membrane potential at -70 mV, an increase in the movement of potassium ions out of that neuron's cytoplasm would result in the _____
A) depolarization of the neuron B) hyperpolarization of the neuron C) replacement of potassium ions with sodium ions D) replacement of potassium ions with calcium ions
Imagine two populations of snails that are polymorphic for sexual reproduction. In each of the two popula-tions, several asexual lineages and a panmictic, sexually reproducing subpopulation of snails are living in the same environment
Several years ago, a new pathogen was detected in the first population. This pathogen is predominantly transmitted between parents and their offspring, but on occasion it is also transmitted horizontally between unrelated individuals. The pathogen is now infecting both sexual and asexual individuals. Since the introduc-tion of the pathogen, the formerly stable ratio of sexual vs. asexual snails has shifted significantly in favor of the sexually reproducing individuals. The second population became at the same time infected with a patho-gen that is almost always transmitted horizontally. In the second population, no shift in the ratio of sexuals vs. asexuals has been observed. Speculate on why the difference in transmission between the two pathogens may have shifted the proportion of sexual reproduction in the first but not in the second population. Limit your answer to one to two sentences. What will be an ideal response?
Both honeybees and birds have wings for flight; thus, these structures are homologous in the
two animal groups.
a. true, because the wings have a similar function and thus must be anatomically similar b. false, because the wings look very different between the two groups c. true, because all animals have a common ancestor d. false, because birds and honeybees do not share a common ancestor from which this trait was derived