Samples X, Y and Z are epidermal tissues taken from an onion. Each epidermal tissue sample was placed in one of three different salt solution concentrations for 30 minutes. A student viewed each tissue sample using a light microscope. The student then used a scale to estimate the concentration of each salt solution. The diagram shows the scale. P, Q and R represent the estimated concentration of the three salt solutions. The photomicrographs show the appearance of the tissues in samples X, Y and Z. Which row shows the estimated concentrations of the salt solutions in which samples Y and Z were immersed?
- Asample Y: P; sample Z: Q
- Bsample Y: P; sample Z: R
- Csample Y: Q; sample Z: R
- Dsample Y: R; sample Z: P