A Plant's Response to the Relative Lengths of Light and Dark

question 29

Multiple Choice

A plant's response to the relative lengths of light and dark periods in its environment during each 24-hour period is a phenomenon called ____.

• A) gravitropism
• B) photoperiodism
• C) thigmotropism
• D) circadian rhythms
• E) phototropism

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Definitions:

Disciplinary Action

Measures taken by an organization in response to employees who have violated policies or expectations.

Easily Replaced Parts

Components in a product or system that are designed to be quickly and easily substituted when needed.

Critical Functions

Essential job duties that an employee must be able to perform, with or without reasonable accommodation.

Good Substitutes

Products or services that can be used in place of one another with minimal loss of utility or performance by the consumer.