Explain how attraction between water molecules supports xylem transport and organisms at water surfaces.
Tę umiejętność sprawdza 6 zadań wzorowanych na arkuszach IB z lat 2023–2026.
A small insect rests on a pond with its feet making slight depressions in the surface. Which molecular interaction primarily supports the surface film? A. Covalent bonds form between the water and the insect cuticle B. Hydrogen bonds attract neighbouring water…
A small water-strider rests on the surface of a still freshwater pool without breaking through it. Which property directly supports its weight? A. Surface tension B. Transparency C. High specific heat capacity D. Adhesion to mineral surfaces
Water influences the operation of organisms and the stability of their environments. (a) Outline how cohesion between water molecules benefits organisms. (b) Describe ecological consequences of ice loss and altered ocean circulation. (c) Explain how hormones…
A column of sap remains connected while being pulled through a tall tree. Which interaction between water molecules helps prevent this column from breaking? A. Covalent bonds formed between neighbouring water molecules B. Hydrogen bonds responsible for…
A small insect is supported by the water surface without breaking through it. Which interaction principally creates the surface tension that supports the insect? A. Attraction of water to cellulose in plant walls B. The thermal motion responsible for…
A small insect is supported by the water surface without breaking through it. Which interaction principally creates the surface tension that supports the insect? A. Attraction of water to cellulose in plant walls B. The thermal motion responsible for…
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