-The Figure Above Shows the Cross Section of a Root

question 91

Multiple Choice

-The figure above shows the cross section of a root grown under different conditions. Explain what is happening in picture B?

• A)With no oxygen, the root has died.
• B)The root is infested with parasites that are eating the root.
• C)Root cells produce absicic acid to increase tolerance to low oxygen.
• D)Root cells produce cytokinins to promote movement of nutrients to roots.
• E)Low oxygen stimulates production of ethylene which causes apoptosis in some cells of the root cortex.

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Definitions:

Marginal Products

The additional output that is produced by employing one more unit of a particular input while holding the quantities of all other inputs constant.

Exponents

Mathematical notations indicating the number of times a base number is multiplied by itself.

Production Function

A mathematical representation that describes the relationship between inputs used in production and the output achieved.

Returns To Scale

A term in economics that describes how the change in the amount of input affects the change in output of a production process.