A Plant Scientist Was Hired by a Greenhouse Operator to Devise

question 3

Multiple Choice

A plant scientist was hired by a greenhouse operator to devise a way to force iris plants to bloom in the short days of winter. Iris normally blooms as a long-day (short-night) plant. Which of the following has the best chance of creating iris blooms in winter?

• A) Artificially increase the period of darkness in the greenhouse.
• B) Increase the temperature to more closely follow summer temperatures.
• C) Alternate four hours of darkness with four hours of light repeatedly over each 24-hour period.
• D) Interrupt the long winter nights with a brief period of light.

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Definitions:

Escher

A Dutch artist known for his mathematically inspired woodcuts, lithographs, and mezzotints featuring impossible constructions and explorations of infinity.

Prefrontal Cortex

Is the part of the brain located at the front of the frontal lobe, involved in complex behaviors, decision-making, and moderating social behaviour.

Social Cognition

The study of how people process, store, and apply information about other people and social situations.

Planning

The process of setting goals, defining the means to achieve them, and organizing activities to accomplish those goals.