the process of secondary growth of dicot woody plant

scientific wall ground tissue microscopic biological educational hypodermis botanical primary phloem pith vascular bundles dicot stem botanic lecture note meiosis passage simple body pectin megaspore theca pollination mitosis water source cell region division mother embryonic root endodermis synergid cells monocot flower compound leaf figure dark design head endosperm mica student pool pollen seed template structure cross nature vector microscope botany anatomy science plant biology diagram mesophyll meristems natural xylem cortex epidermis education micro microbiology macro cambium