BIOA02H3 Lecture Notes - Lecture 3: Eudicots, Parenchyma, Pith
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BIOA02H3 Full Course Notes
Verified Note
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Document Summary
Lengthwise through parenchyma (ground tissues with just pectin) Bundles form a circle within the ground tissues. Outer parenchyma = cortex, inner parenchyma = pith. No pith and cortex regions of ground tissues. Large surface area for absorbing sunlight and carbon dioxide. Conduct water and minerals to aerial plant parts. Root structure is specialized for underground growth. Taproot and fibrous root systems are specialized for particular functions. Adventitious roots arise from the stem of the young plant in some plants. Adventitious refers to any of the structures that arise in an unusual location such as roots that grow from stems or leaves. Between the stele (vascular cylinder) and the endodermis. Can function as the meristem to give rise to lateral roots. Stele runs through the center of the root. Stele forms a ring and divides ground tissues into the cortex and the pith, in corn and some other monocots. Root primordia in pericycle layer form lateral roots.
