Zadanie 5c
Explain the effect on a leaf cell’s water potential when its solute potential becomes less negative, with pressure potential unchanged.
Combining pressure and solute potentials
Calculate water potential from its pressure and solute components, including positive turgor and negative xylem tension.
Tę umiejętność sprawdza 9 zadań wzorowanych na arkuszach IB z lat 2023–2026.
Zadania sprawdzające tę umiejętność: 9 Otwórz w wyszukiwarce z filtrami
Zadanie 20
A plant cell equilibrates first in solution P and then in a more concentrated solution Q. Its appearances are shown. How do its water potential and pressure potential change from P to Q? A. Water potential rises; pressure potential rises B. Water potential…
- Materiał graficzny
Zadanie 4a
Explain changes in pressure and solute potential when an initially non-turgid root cell is put in a hypotonic solution.
Zadanie 20
A plant cell has water potential−0.38 MPa and pressure potential+0.27 MPa. Using Ψw = Ψs + Ψp, calculate its solute potential. A. −0.11 MPa B. +0.65 MPa C. +0.11 MPa D. −0.65 MPa
Zadanie 1c
Explain how immersion in the solution containing no sucrose affects the tissue’s water potential.
- Materiał graficzny
Zadanie 29
How can the proximity of xylem to phloem help translocation at a sugar-loading region? A. Xylem transfers all its lignin into sieve tubes B. Water can enter the sugar-rich phloem osmotically and help generate pressure C. The two tissues use the same continuous…
Zadanie 31
A plant grows in saline soil. Which adaptation could help maintain water uptake while limiting salt damage to cytoplasmic enzymes? A. Transporting absorbed ions into vacuoles, lowering cellular solute potential while keeping cytoplasmic ion levels controlled…
Zadanie 29
Which pressure relationship drives bulk flow of phloem sap from a source region towards a sink? A. Higher hydrostatic pressure at the source than at the sink B. Higher hydrostatic pressure at the sink than at the source C. Exactly equal hydrostatic pressure at…
Zadanie 29
Which pressure relationship drives bulk flow of phloem sap from a source region towards a sink? A. Higher hydrostatic pressure at the source than at the sink B. Higher hydrostatic pressure at the sink than at the source C. Exactly equal hydrostatic pressure at…