After the Price of Smartphone Apps Falls, Justin Buys Fewer

question 303

Multiple Choice

After the price of smartphone apps falls, Justin buys fewer flash drives but he buys a new smartphone. For Justin

• A) smartphone apps and flash drives are complements, and smartphone apps and smartphones are substitutes.
• B) smartphone apps, flash drives, and smartphones are all complements.
• C) smartphone apps and flash drives are substitutes, and smartphone apps and smartphones are complements.
• D) smartphone apps, flash drives, and smartphones are not all complements.

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Definitions:

Root Cap

A covering of cells over the root tip that protects the delicate meristematic tissue directly behind it.

Root Tip

The extreme end of a root in a plant, involved in growth and absorption of water and nutrients from the soil.

Tracheids

Long, thin cells found in the xylem of nearly all vascular plants that function in water transport and support.

Vessel Elements

Components of the xylem tissue in plants, which transport water and nutrients from the roots to other parts of the plant.