Unintended Differences Between the Groups in an Experiment May Introduce

question 29

Multiple Choice

Unintended differences between the groups in an experiment may introduce confounds; these differences reflect a condition known as _____ bias.

• A) selection
• B) assignment
• C) directionality
• D) sampling

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Definitions:

Hydrogen Bonds

Weak bonds between partially positively charged hydrogen atoms and other partially negatively charged atoms, significant in the structure of water and biological molecules.

Transpiration

The pathway that water takes, moving from the roots to microscopic pores located on the leaf undersides, where it vaporizes and escapes into the surrounding air.

Mycorrhiza

Mutually beneficial partnership between a fungus and a plant root.

Mutual Beneficial Association

A relationship between two or more organisms where all parties involved gain benefits, often seen in symbiotic relationships.