Construct a frequency distribution for the set of data below. Use four classes, beginning with "10 up to 20," then "20 up to 30," then "30 up to 40," and finally "40 up to 50."
Definitions:
Sieve Tube Elements
Specialized cells in phloem of vascular plants, forming channels for transporting sugars and other nutrients.
Lenticels
Small, corky areas on the stems and roots of plants that allow for gas exchange with the surrounding air.
Gas Exchange
The process by which organisms exchange gases with their environment, including the uptake of oxygen and the release of carbon dioxide.
Periderm
is the protective outer secondary layer of bark in woody plants and trees, comprising the phellem, phellogen, and phelloderm.
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