Consider the cladogram shown. Which pair of species shares the greatest number of derived characters (synapomorphies)?
A. 2 and 3
B. 2 and 4
C. 6 and 5
D. 1 and 4
E. 6 and 4
Answer: A
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Salt marsh plants play an important ecological role in
a. recycling nutrients. b. stabilizing sediments. c. filtering run-off from coastal areas. d. habitat for small animals. e. all of the above
Members of two different bird species mate and
produce viable, fertile offspring. Members of neither parent species recognize the courtship song of the hybrids. The hybrids are subject to a. mechanical isolation. b. gamete mortality. c. behavioral isolation. d. ecological isolation. e. hybrid inviability.
The majority of precipitation reaching land is derived from evaporation of oceanic waters
Indicate whether the statement is true or false
Which is NOT a human disease using an insect as the vector?
a. Malaria b. Plague c. Chagas' disease d. Yellow fever e. AIDS