WARM UP 1.List the 3 basic plant parts, the 2 tissue systems, and 1 of the types of ground tissue. 2.Write a 1-word description of each of the above. 1.List.

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Presentation transcript:

WARM UP 1.List the 3 basic plant parts, the 2 tissue systems, and 1 of the types of ground tissue. 2.Write a 1-word description of each of the above. 1.List the 3 basic plant parts, the 2 tissue systems, and 1 of the types of ground tissue. 2.Write a 1-word description of each of the above.

Roots, Shoots, and Transport

Plant Transport Roots and Shoots move material through vascular tissue (tubes) –Xylem (water) –Phloem (sugar)

Root Systems Taproot –Deep primary root Fibrous –Many lateral roots

Root Functions Anchor Transport

Root Structure Root cap

Root Structure Root hairs Vascular cylinder

Absorption Root hairs –Surface area

Absorption Endodermis –Casparian strip –Selective permeability

Shoot Systems Vascular bundles in rings (dicots) or spread (monocots)

Shoot Functions Support Transport

Water Transport - Xylem Dead tubes (tracheids)

Water Transport - Xylem Cohesion-Tension Model –Transpiration (evaporation out of leaves) pulls on water –Water moves as a column due to cohesion and adhesion

Sugar Transport - Phloem Living –Sieve-tube members –Companion cells

Sugar Transport - Phloem Translocation –Sugar flows along a diffusion gradient

Sugar Transport – Phloem Pressure-Flow Model –Companion cells load sugar in phloem (source) –Water moves in (osmosis) –Pressure causes flow –Sugar and water out

WRAP UP Name the model of water transport. Name the model of sugar transport.