What Structure of the Guard Cells Allows Them to Expand

question 18

Multiple Choice

What structure of the guard cells allows them to expand outward instead of spherically when inflated with water?

• A)thick outer walls in contact with epidermal cells
• B)thin inner walls that border the stomata
• C)thin outer walls in contact with epidermal cells
• D)thick inner walls that border the stomata

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Definitions:

Formic Acid

The simplest carboxylic acid with the chemical formula HCOOH, known for its role in ant stings.

Empirical Formula

The simplest expression of a compound's composition, showing the ratio of elements without structural information.

Elemental Analysis

Elemental analysis is a process by which the composition of chemical substances is determined, identifying the quantity of each element within a compound.

Acid/Base Reaction

A chemical reaction that involves the transfer of hydrogen ions (H+) between a proton donor (acid) and a proton acceptor (base).