in the experiment, what factors affected the number of energy storage molecules that the elodea plant can make?
The experiment showed that the number of energy storage molecules (like glucose) the Elodea plant could make was affected by changes to key photosynthesis conditions: mainly light intensity , carbon dioxide (CO₂) availability , and temperature.
Main factors in the Elodea experiment
- Light intensity (how much light the plant received)
- Brighter light (or the light source closer to the plant) generally increased the rate of photosynthesis, so the plant could make more energy storage molecules in a given time.
* Dim light or covering the plant (for example, wrapping vials in foil in some classroom versions of the lab) reduced photosynthesis and therefore reduced the number of energy storage molecules produced.
- Carbon dioxide concentration
- CO₂ is a reactant in photosynthesis, so when more CO₂ was available in the water, the plant could build more sugar molecules, increasing its energy storage.
* If CO₂ was low, it limited the rate of photosynthesis even if there was plenty of light, so fewer energy storage molecules were made.
- Temperature
- Photosynthesis depends on enzymes , which work best in a certain temperature range; when the temperature was close to this optimum, Elodea could make more energy storage molecules.
* If it was too cold or too hot, enzyme activity slowed or became less efficient, so the plant produced fewer energy storage molecules.
- Water and nutrients (usually background factors)
- Water is also a reactant in photosynthesis, and nutrients like nitrogen and phosphorus are needed to build chlorophyll and other cell components.
* In typical classroom Elodea setups, water and basic nutrients are not the main variable, but if they are limited, they can still reduce how many energy storage molecules the plant can make.
Putting it into one sentence
In this Elodea photosynthesis experiment, the number of energy storage molecules the plant could make was mainly affected by the amount of light , the amount of carbon dioxide , and the temperature of the environment (with water and nutrients as supporting factors).
So, if your assignment asks:
“In the experiment, what factors affected the number of energy storage molecules that the Elodea plant can make?”
A complete answer is: light intensity, carbon dioxide concentration, and temperature (and you can add that water and nutrients also matter, even if they weren’t the main variables tested).
TL;DR: The Elodea plant’s ability to make energy storage molecules in the experiment depended on light intensity, carbon dioxide levels, and temperature , because these control how fast photosynthesis happens.
Information gathered from public forums or data available on the internet and portrayed here.