Discriptive investigation never include a hypothesis.
They are better because they are for comparative use for instance hair color to finger nails they both grow but onto separate parts of the body.
Hope this helps [:
Endodermis<span>. single layer of cells surrounding the central stele (vascular tissue) in roots. The radial and transverse walls contain the hydrophobic Casparian band, that prevents water flow in or out of the stele through the apoplast. Also present in some stems.</span>
