Identify the correct statements regarding Mass flow hypothesis. (A) Mass flow is faster than diffusion. (B) Mass flow is the result of pressure difference between the end points. (C) Different substances involved in mass flow move at different paces. (D) Mass flow can result through either a positive or a negative hydrostatic pressure gradient. Choose the correct answer from the options given below:

Step-by-step solution

Long distance transport of substances within a plant cannot be by diffusion alone as it is a slow process. Thus, special long distance transport system (mass flow system) become necessary so as to move substances across long distance and at a much faster rate. Thus statement (A) is correct. Mass flow is the movement of substances in bulk from one point to another as a result of pressure differences between the two points. Thus, statement (B) is correct. It is a characteristic of mass flow that substances, whether i