Nitrogen: Nitrogen is an important nutrient for overall plant growth and is a component of amino acids and proteins. It also contributes to chlorophyll synthesis.
______________ has role in chlorophyll synthesis, leaf expansion and in growth of plants.
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Question context
This question is part of 🔬 General Science within the broader 🌐 Current Affairs & GK subject and appears in the PPSC Punjab Public Service Commission preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.