Which Characteristic Is Not True for an Essential Element

question 66

Multiple Choice

Which characteristic is not true for an essential element?

• A) It may play only one role in plant metabolism.
• B) It is necessary for normal growth and reproduction.
• C) It may be contained in plant seeds in high enough quantities to sustain the adult plant.
• D) Occasionally, it can be functionally replaced by another element.
• E) It may be required in only trace amounts.

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Definitions:

Black Markets

Illegal trading of goods and services that occurs outside the official channels sanctioned by authorities.

Price Ceilings

An imposed limit on the price charged for a product or service, often set by government regulation to protect consumers from excessively high prices.

Market Intervention

Market intervention is the action taken by a government or a regulatory authority to affect the market for a particular good or service, typically to correct market failures.

Price Floor

A government- or authority-imposed price control or limit on how low a price can be charged for a product, service, or commodity.