NTSE Exam Question Biology Which of the following crops would require minimum quantity of urea of NPK for its growth (a) Sugarcane (b) Paddy (c) Groundnut (d) Black – gram
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(a) sugarcane needs only less urea
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Correct answer is d
Black-gram requires minimum quantity of urea or NPK for its proper growth because leguminous plants have root nodules which provide shelter for symbiotic nitrogen-fixing bacteria that convert nitrogen gas from the atmosphere into ammonia doing formation of amino acids and nucleotides.
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