Ever since Darwin, systematics has tried to
A) organize species into groups based on logical categories.
B) classify species in groups that reflect evolutionary relationships.
C) prove the existence of evolution using laboratory experiments.
D) keep classification and naming as a practical science, separate from controversies involving evolution.
Answer: B
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False ribs are also known as
A) vertebral ribs. B) vertebrochondral ribs. C) vertebrosternal ribs. D) floating ribs. E) both vertebrochondral ribs and floating ribs.
Neurotransmitters are removed from the
synaptic cleft by
a. diffusion. b. enzymatic degradation. c. active pumping back into the neuron. d. all of these. e. b and c only
Which statement is true?
a. Both the parasympathetic and sympathetic nervous systems send nerves to all organs. b. The sympathetic nervous system that supplies an organ will also provide parasympathetic nerves to it. c. The sympathetic branch can have either excitatory or inhibitory effects depending on effects from the environment. d. The sympathetic branch of the autonomic system usually speeds up the activities of the body. e. The parasympathetic system usually speeds up the activities of the body
Which statement about movement corridors is true?
A) Movement corridors can connect otherwise isolated habitat patches. B) Movement corridors can promote inbreeding in declining populations. C) Movement corridors are detrimental to species that migrate between habitats seasonally. D) Movement corridors can prevent the spread of disease.