The Cells That Surround Each Stoma and Control Its Opening

question 21

Multiple Choice

The cells that surround each stoma and control its opening and closing are:

• A)Sieve tube cells
• B)Vascular cells
• C)Companion cells
• D)Pith cells
• E)Guard cells

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Definitions:

Price of An Input

The cost associated with one unit of a raw material or component used in the production of goods or services.

Perfectly Competitive Industry

A market structure characterized by many buyers and sellers, free entry and exit, and a homogeneous product.

Short-Run Industry

An industry characterized by the presence of fixed and variable costs, where firms cannot enter or exit the market easily in the short term.

Marginal Cost Curves

A graphical representation that shows how the cost of producing one more unit of a good changes as production increases.