What Is the Principal Substance That Causes Phototropism in Stems

question 129

Multiple Choice

What is the principal substance that causes phototropism in stems or leaves?

• A) auxin
• B) gibberellin
• C) abscisic acid
• D) ethylene
• E) all of these

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Definitions:

Labor Supply

The total hours that workers wish to work at a given wage rate, in a given time period.

Payroll Tax

Taxes levied on employers or employees, and are based on the salary or wages of employees. These taxes fund social security and healthcare programs.

Elastic

describes a condition in which the quantity demanded or supplied of a good or service is highly responsive to changes in its price.

Corporate Profits Tax

A levy imposed on the income or profit earned by corporations or analogous legal entities.