When mosquitoes search for their next blood meal, their sensory receptors respond to CO2 levels. Which of the following types of receptor is functioning?
A. a mechanoreceptor
B. a thermoreceptor
C. a nociceptor
D. a chemoreceptor
D
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Typically, flower color and shape are associated with what type of selective pressures?
a. natural selection b. mutation c. sexual selection d. evolution
What system reclaims fluids and proteins that have escaped from blood capillaries?
a. cardiovascular b. pulmonary c. lymphatic d. sinoatrial e. venous
Which color of light is most effective in producing
phototropism? a. red b. blue c. yellow d. white e. green
A new highway is built in an area. Half of a population of a certain species of animal is on one side of the highway and half on the other side. The animals are unable to cross the highway. The highway creates an example of
A. behavioral isolation. B. seasonal isolation. C. geographic isolation. D. polyploidy.