The Researcher Notices That the Vocabulary Level Is Also Associated

question 12

Multiple Choice

The researcher notices that the vocabulary level is also associated with intelligence level, so he determines that the research design must hold the level of intelligence constant to get a good idea of the relationship between pleasure reading and vocabulary level. Intelligence here is an example of what type of variable?

• A) moderator variable
• B) dependent variable
• C) control variable
• D) extraneous variable

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Definitions:

Pressure-Flow Model

A hypothesis describing how sugars are transported in plants, particularly how sucrose is moved from photosynthetic tissues to various parts of the plant through the phloem.

Phloem

The vascular tissue in plants responsible for the transport of sugars and nutrients throughout the plant.

Water Potential

The potential energy of water per unit volume relative to pure water, which determines the direction water will flow.

Tension-Cohesion Model

A theory explaining how water moves through plants, relying on water's cohesive properties and the tension created by transpiration.