Hydroponically Grown Plants Are Grown in a Nutrient Solution in Which

question 4

Multiple Choice

Hydroponically grown plants are grown in a nutrient solution in which air is bubbled. Why is bubbling of air through the solution needed?

• A) Without the air, the solution would become so hot that the enzymes would denature.
• B) Bubbling of air through the solution allows soil microbes to thrive.
• C) Water and nutrient solutions don't have enough oxygen to sustain aerobic respiration.
• D) The bubbling solution increases the relative humidity within the plant chamber which is needed for plant growth.
• E) Bubbling of air in the solution is not really needed; it's just what is done.

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Definitions:

Diode

A semiconductor device that allows current to flow in one direction only, commonly used for rectification or as a check valve in electrical circuits.

Circuit Resistance

The opposition to the flow of electric current within a circuit, measured in ohms, affecting the circuit's performance and power consumption.

DMM

Stands for Digital Multimeter, an electronic measuring instrument that combines several measurement functions in one unit, such as voltage, current, and resistance.

Ohmmeter

A device used to measure electrical resistance in units of ohms.