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.
If the roots of $\sqrt{\frac{1 - y}{y}} + \sqrt{\frac{y}{1 - y}} = \frac{5}{2}$ are $\alpha$ and $\beta$ ($\beta > \alpha$) and the equation $(\alpha + \beta)x^4 - 25\alpha \beta x^2 + (\gamma + \beta - \alpha) = 0$ has real roots, then a possible value of $y$ is: