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Biology Vocab chapter 29

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Biology
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Biology
anatomy
Plant Anatomy
Botany
Plant physiology
Tissues
plant cell
Phloem
Vascular tissue
Pericycle
Root
Cortex
health
Environment
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Chris Schink Biology Vocab Chapter 29 Parenchyma- In higher plants, the fundamental tissue that is composed of thin walled living cells that function in photosynthesis and storage. Collenchyma- A group of elongated, thick walled plant cells that support the growth of leaves and stems. Sclerenchyma- A type of plant tissue composed of cells that have thickened secondary walls that function in plant support. Epidermis- The outer layer of cells of a plant or animal. Cuticle- A waxy or fatty watertight layer on the external wall of epidermal cells. Tracheid- A thick-walled cylindrical cell with tapered ends that is found in xylem and that provides support and conducts water and nutrients. Pit- In plants, the thin, porous areas of a tracheid cell wall.

Chapter 5 Vocab

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Passive transport: the movement of substances across a cell membrane without the use energy by the cell Diffusion: the movement of molecules from a higher area of concentration to a lower area of concentration Concentration gradient: difference in concentration of molecules across a distance. Equilibrium: the concentration of molecules will be the same throughout the space the molecules occupy. Osmosis: the process by which water molecules diffuse across a cell membrane from an area of higher concentration to lower concentration. Hypotonic: the concentration of solute molecules outside the cell is LOWER than the concentration in the cytosol. Water diffuses INTO the cell until equilibrium.
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