Page 3: Transpiration Process

The final page focuses on transpiration, the process driving water movement through plants.

Definition: Transpiration is the loss of water vapor from plant surfaces, measured in g/cm²/hr.

Highlight: The transpiration stream is powered by water potential gradients and molecular forces.

Vocabulary: Cohesion refers to the attraction between water molecules, while adhesion describes water's attraction to xylem vessel walls.

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Page 1: Xylem and Phloem Location and Phloem Adaptations

The first page explores the strategic positioning and specialized adaptations of xylem and phloem tissues within different plant parts. These vascular tissues form an intricate transport network throughout the plant body.

Definition: The vascular system consists of xylem and phloem tissues that transport substances throughout the plant.

Example: In roots, xylem and phloem are centrally located for soil penetration support, while in stems they're positioned near the outside to provide scaffolding against bending.

Highlight: Phloem tissue contains specialized cells called sieve tube elements that form continuous tubes for sugar transport, supported by companion cells that provide essential living functions.

Vocabulary: Sieve plates are perforated end walls between sieve tube elements that allow solute movement.