Cocklebur Will Not Flower If Exposed to 8 Hours of Dark

question 22

Multiple Choice

Cocklebur will not flower if exposed to 8 hours of dark and 16 hours of light.It will flower if exposed to 16 hours of dark and 8 hours of light.However,if the 16 hours of dark is interrupted with a brief period of light,the cocklebur will not flower.Which of the following will trigger cocklebur to flower?

• A) long dark periods
• B) short dark periods
• C) short light periods
• D) long light periods

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Definitions:

Domestic Opportunity Cost

The cost of forgoing the next best alternative use of a country's own resources.

Comparative Advantage

The principle that countries or entities should produce goods and services where they have a lower opportunity cost compared to others.

Domestic Opportunity Cost

The cost of forgoing the next best alternative when choosing to produce a good or service domestically.