Yellow spots on citrus leaves is due to the deficiency of:

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Q: 80 (SSC/NA)
Yellow spots on citrus leaves is due to the deficiency of:

question_subject: 

Science

question_exam: 

SSC

stats: 

0,5,4,2,5,1,1

keywords: 

{'citrus leaves': [1, 0, 0, 0], 'yellow spots': [1, 0, 0, 0], 'deficiency': [5, 0, 10, 2], 'zinc': [1, 0, 0, 2], 'iron': [0, 0, 1, 1], 'magnesium': [1, 0, 2, 3]}

The correct answer is option 2: Magnesium. Yellow spots on citrus leaves can indicate a deficiency of Magnesium. It is essential for the proper functioning of chlorophyll, the pigment responsible for photosynthesis. When there is a lack of Magnesium, chlorophyll production is affected, resulting in yellow spots on the leaves.

Option 1: Zinc is not the correct answer in this case. Zinc deficiency can cause a different set of symptoms, such as stunted growth and distorted leaves.

Option 3: Boron deficiency may also cause yellowing of citrus leaves, but it is more commonly associated with brown or necrotic patches rather than spots.

Option 4: Iron deficiency is characterized by yellow leaves with green veins, which is different from the yellow spots described in the question.

Hence, the correct answer is option 2: Magnesium.