cross-section dicot, monocot and root of plant stem under the microscope.

and annual background biological biology botanic botanical botany bundle cambium cap cell cells chloroplasts classroom collenchyma cortex cross crosssection cut detail dicot education educational for growth histological isolated lab light macro magnification micro micrograph microscope microscopic monocot nucleus pattern phloem plant research root science scientific secondary section slide stem structure tip tissue under vascular white wood xylem