Explain how evaporation from leaves generates tension that pulls a continuous water column through xylem.
Tę umiejętność sprawdzają 4 zadania wzorowane na arkuszach IB z lat 2022–2025.
Water evaporates from mesophyll cell walls while roots have an adequate water supply. Which process helps replace the lost water? A. Upward bulk flow through xylem driven by transpiration pull B. Permanent closure of every stoma before any water is lost C.…
(a) Outline how evaporation of sweat cools the body. (b) Describe the kidney’s response when body water is depleted. (c) Explain the movement of water from soil, through a flowering plant and into the air.
Explain why the immersed leafy cuttings differ from the leafless control.
Water has physiological roles in both plants and mammals. (a) Outline how water’s properties allow evaporation to cool an animal. (b) Describe how weather affects the movement and loss of water in a terrestrial plant. (c) Explain how a dehydrated mammal…
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