Find incorrect statements related to water relations in plants:
A. Water potential difference is the drawing force for osmosis.
B. The driving force of diffusion is the concentration gradient.
C. Pressure potential is negative.
Analyzing each statement.
Statement A is correct as osmosis is driven by a difference in water potential.
Statement B is also correct; diffusion indeed occurs due to a concentration gradient.
Statement C is generally incorrect as pressure potential in plant cells is typically positive due to turgor pressure, though it can become negative under severe water stress.
In the given circuit, if the potential at point B is 24 V, the potential at point A is:
