Page 3: Transpiration Process and Influencing Factors

The page examines transpiration and the various factors affecting its rate in plants.

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

Highlight: Multiple environmental and structural factors influence transpiration rates, including light intensity, temperature, and humidity.

Example: Increased leaf surface area leads to higher transpiration rates due to more area for water evaporation.

Vocabulary: Relative humidity - the amount of water vapor present in air compared to the maximum possible at that temperature.

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.