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MCQ practice · SSC Biology Board questions · Chapter 5: Food, Nutrition and Digestion

Rajshahi Board 2023

The lack of which element causes the 'dieback' disease?

Think it through first, then pick an option.

  1. a calcium
  2. b sulphur
  3. c magnesium
  4. d potassium
Answer and explanation

Correct answer: b sulphur

Lack of sulphur makes tissue die one after another starting from the tips of roots, stem and leaves, which is called dieback.

Why the other options are wrong

  • a calcium: “calcium” does not fit here. Lack of sulphur makes tissue die one after another starting from the tips of roots, stem and leaves, which is called dieback.
  • c magnesium: “magnesium” does not fit here. Lack of sulphur makes tissue die one after another starting from the tips of roots, stem and leaves, which is called dieback.
  • d potassium: “potassium” does not fit here. Lack of sulphur makes tissue die one after another starting from the tips of roots, stem and leaves, which is called dieback.