Simberloff and Wilson carried out a famous experiment to study the recolonization by arthropods of small mangrove by islands after the islands were fumigated. One of their findings was
A. The islands never recovered to their pre-fumigation levels of arthropod species richness.
B. Species turnover was high following recolonization.
C. Recolonization rates were identical on all of the islands regardless of distance to the mainland.
D. Arthropod species richness on the islands changed little following recolonization.
D. Arthropod species richness on the islands changed little following recolonization.
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Over evolutionary time, flowering plants have
evolved colors, odors, and nectar that attract pollinating insects and the insects have evolved mechanisms that detect the changes in plants and to better collect pollen. This is an example of
a. exaptation. b. phylogenetic change. c. coevolution. d. convergent evolution. e. sympatric speciation
Active transport can only move a substance with a concentration gradient
1.True 2.False
The tuberculin reaction develops within 30 minutes of the skin test in people with prior sensitization due to tuberculosis infection.
Answer the following statement true (T) or false (F)
In order to be called a primitive cell, the entity would have to
A. control chemical reactions. B. have genetic material. C. use a source of energy from its surroundings. D. All of these answers are true.