Chapter 36 Plant Form Notes Essay

1748 Words Oct 2nd, 2014 7 Pages
Chapter 36: Plant Form
Plant Body Organization * A vascular plant consists of * Root system * Anchors the plant * Used to absorb water and ions * Shoot system * Consists of supporting stems, photosynthetic leaves, and reproductive flowers * Repetitive units consist of internode, node, leaf, and axillary bud

* 3 basic tissue types * Dermal – outer protective cover * Ground – function in storage, photosynthesis, and secretion * Vascular – conducts fluids and dissolved substances * Tissues consist of one or more cell types * Tissue systems – each of these tissue types extends through root and shoot systems

Meristems * Clumps of small cells with dense
…show more content…
outer bark * Vascular cambium produces secondary vascular tissue * Secondary xylem is the main component of wood

Plant Tissues * Three main types of tissue * Dermal * On external surfaces that serves a protective function * Ground * Forms several different internal tissue types and can participate in photosynthesis, serve a storage function, or provide structural support * Vascular * Conducts water and nutrients

Dermal Tissue * Forms the epidermis * One cell layer thick in most plants * Forms the outer protective covering of the plant * Covered with a fatty cutin layer constituting the cuticle * Contains special cells, including guard cells, trichomes, and root hairs * Guard cells * Paired sausage-shaped cells * Flank a stoma – epidermal opening * Passageway for oxygen, carbon dioxide, and water vapor * Stomatal patterning genes reveal a coordinated network of cell–cell communication that informs cells of their positions relative to other cells and determines cell fate

Ground Tissue * 3 cell types * Parenchyma * Function in storage, photosynthesis, and secretion * Collenchyma * Provide support and protection * Sclerenchyma * Provide support and protection

Parenchyma cells * Most common type of plant cell * Living protoplasts – may live many years * Function in

Related Documents