When an Experiment Has Poor Internal Validity, Which of the Following

question 29

Multiple Choice

When an experiment has poor internal validity, which of the following might be of concern?

• A) The results of the experiment may not relate to real-world situations.
• B) It might be difficult to determine if the independent variable was what produced the result.
• C) The observed results may not be statistically significant.
• D) The results may not be practically significant.

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Definitions:

Sporophyte Generation

The stage in the life cycle of plants and algae where the organism is diploid and generates spores.

Gametophyte

The haploid stage in the life cycle of plants and algae that produces gametes through mitosis for sexual reproduction.

Megasporangium

In a heterosporous plant, structure in which megaspores are produced. Megasporangia of seed plants are ovules that develop into seeds following fertilization. Compare with microsporangium.

Heterosporous

Referring to plants that produce two types of spores, microspores which develop into male gametophytes and megaspores which develop into female gametophytes.