A seedling was made to stand in a solution of red ink for three hours and a transverse section of the stem was examined under the microscope

A seedling was made to stand in a solution of red ink for three hours and a transverse section of the stem was examined under the microscope. The process being investigated was

A the importance of micro elements to plants

B ascent of water through the xylem

C diffusion of colored substances

D distribution of food in plants

Answer is C

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