WAEC Biology 2018 Objective — Question 10
Question 10 of 50 from the West African Examinations Council (WAEC) Biology 2018 Objective paper, with the correct answer and a full explanation.
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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 the
- A. importance of micro elements to plants
- B. ascent of water through the xylemCorrect
- C. diffusion of coloured substances
- D. distribution of food in plants
Explanation
The red ink experiment demonstrates that xylem vessels are responsible for the upward conduction (ascent) of water and dissolved minerals.
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