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Chapter 3 Vocab

Chapter 3 Vocab Words

Cuticle Waxy, protective layer that covers the stems, leaves, and flowers of many plants and helps prevent water loss.
Cellulose Chemical compound made out of sugar; forms tangled fibers in the cell walls of many plants and provides structures and support.
Vascular Plants Plant with tubelike structures that move minerals, water, and other substances throughout the plant.
Nonvascular Plants Plant that absorbs water and other substances directly through its cell walls instead of through tubelike structures.
Rhizoids Threadlike structures that anchor nonvascular plants to the ground.
Pioneer Species First organisms to grow in new or disturbed areas; break down rock and build up decaying plant materical so that other plants can grow.
Stomata Tiny openings in a plant's epidermis through which carbon dioxide, water vapor, and oxygen enter and exit.
Guard Cells Pairs of cells that surround stomata and control and closing.
Xylem Vascular tissue that forms hollow vessels that ranspor substances, other than sugar, throughout a plant.
Phloem VAscular tissue that forms tubes that transport dissolved sugar throughout a plant.
Cambium Vascular Tissue that produces xylem and phloem cells as a plant grows.
Gymnosperms Vascular plants that do not flower, generally have needlelike or scalelike leaves, and produce seeds that are not protected by fruit; conifers, cycads, ginkgoes, and gnetophytes
Angiosperm Flowering vascular plants that produce fruits containing one or more seeds; monocots and dicots.
Monocots Angiosperm with one cotyledon inside its seed flower parts in multiples of three, and vascular tissues in bundles scattered throughout the stem.
Dicots Angiosperm with two cotyledons inside its seed, flower parts in multiples of four or five, and vascular bundles in rings.
Created by: cwradseck