Of the following is an example of biogeography?
a. studies of the travelling around the world and observing life
b. studies of the world distribution of humans
c. studies of the world distribution of fungi and animals
d. studies of the world distribution of plants and animals
Answer: d. studies of the world distribution of plants and animals
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According to the Hardy—Weinberg principle, microevolution occurs when ____
a. a population experiences a shift in allele frequencies b. no mutations are occurring in a population c. a population is closed to migration from other populations d. a feature of an individual animal changes through use or disuse e. when a population has different forms of the same gene
During the day in most plants
a. carbon dioxide accumulates in leaf cells. b. turgor pressure in the guard cells decreases. c. water and potassium move into the guard cells. d. the guard cells wilt. e. water is conserved.
The conscious awareness of a stimulus is ____
a. threshold b. sensation c. transduction d. perception e. action potential
What is the function of a plant cell vacuole?
A) Replicates chromosomes B) Stores water C) Initiates division of the cell D) Packages proteins for export