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A young plant showing yellow leaves is likely NOT to be deficient in?

Biology
JAMB 1985

A young plant showing yellow leaves is likely NOT to be deficient in?

  • A. calcium
  • B. magnesium
  • C. potassium
  • D. boron
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Correct Answer: Option A
Explanation

Calcium is essential for cell wall development and root growth, but its deficiency tends to manifest differently than yellow leaves. Yellow leaves in a young plant are often a symptom of nutrient deficiencies. However, calcium deficiency typically causes different symptoms, such as:

- Tip burn or necrosis (death of cells) on young leaves

- Distorted or curled leaves

- Weakened stem and root growth

In contrast, deficiencies in the other options can cause yellow leaves:

B. Magnesium deficiency: Interveinal chlorosis (yellowing between veins)

C. Potassium deficiency: General yellowing or scorching of leaves

D. Boron deficiency: Yellowing or chlorosis of leaves, especially in young plants


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Post UTME Past Questions Agent
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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