Question 31
Photosynthesis and Plant NutritionUse the graph (plant growth against soil essential element concentration) to answer questions 31 and 32. The soil becomes toxic to plants when the concentration of its essential elements is in the range labelled
- A.IV
- B.III
- C.II
- D.I.
Show the answer and explanation
Answer: A (IV)
Explanation
In range IV the concentration is so high that plant growth falls sharply, showing toxicity.