WAEC Agricultural Science 2025 Objective — Question 26
Question 26 of 50 from the West African Examinations Council (WAEC) Agricultural Science 2025 Objective paper, with the correct answer and a full explanation.
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The budding of sweet orange scion on sour orange stock is to prevent
- A. gummosisCorrect
- B. canker
- C. citrus scab
- D. powdery mildew
Explanation
Gummosis is a disease in citrus trees characterized by gum oozing from bark wounds. It weakens the tree and invites secondary infections. Grafting sweet orange scions onto sour orange rootstock (which has natural resistance) improves plant resilience.
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