Which reproductive isolating mechanism is mostly restricted to animals?
A) behavioral
B) geographic
C) temporal
D) ecological
E) hybrid infertility
Answer: A
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Water moves (select all correct choices):
A. from regions of high water concentration to regions of low water concentration. B. from regions of low water concentration to regions of high water concentration. C. from regions of high solute concentration to regions of low solute concentration. D. from regions of low solute concentration to regions of high solute concentration. E. from regions of low water concentration to regions of low solute concentration.
High levels of hormones as a result of exogenous treatment will
a. often produce excess blood levels of the hormones, causing feedback system to cause further increases. b. often cause negative feedback systems to stop functioning in a normal fashion. c. convert negative feedback systems to positive feedback systems. d. have no effect on normal feedback systems. e. cause positive feedback systems to be inhibited.
Deep-diving animals accomplish their dives
through all of the following means EXCEPT by a. redirecting blood flow. b. conserving energy by gliding rather than swimming. c. relying primarily on anaerobic respiration during deep dives. d. binding oxygen to myoglobin and hemoglobin. e. assuring that the brain has an uninterrupted supply of
Fibroblasts scattered among many elastic fibers.
What will be an ideal response?