BIOL-UA 11 Chapter Notes -Eudicots, Taproot, Monocotyledon
Document Summary
Plants inhabit and draw resources from two environments, so they have a root system. Roots are typically not photosynthetic; the rely on photosynthates imported from the shoot system. Vegetative growth (production of nonreproductive leaves, stems and roots) is only one stage in a plants life; most plant also undergo growth relating to sexual reproduction. Root - organ that anchors a vascular plant in the soil, absorbs minerals and water, and often stores carbohydrates. Taproot system - consists of a taproot (main vertical root, develops from an embryonic root) which gives rise to lateral roots (branch roots); found in most eudicots and gymnosperms. Penetrate deeply; well adapted to deep soils. Fibrous root system - consists of many small roots emerging from the stem; occurs in monocots because the embryonic root dies early in development. Root hairs - small projections near the tips of roots that increase the surface area to aid in absorption of water and minerals.
