NEET Biology question

Not in NEET syllabus

Farmers in a particular region were concerned that premature yellowing of leaves of a pulse crop might cause a decrease in yield. Which treatment would be most beneficial in obtaining maximum seed yield?

(A)Frequent irrigation of the crop
(B)Treatment of the plants with cytokinins along with a small dose of nitrogenous fertiliser
(C)Removal of all yellow leaves and spraying the remaining green leaves with 2,4,5-trichlorophenoxyacetic acid
(D)Application of iron and magnesium to promote synthesis of chlorophyllCorrect

Answer: (D)

Solution

Premature yellowing of leaves is a classic chlorosis symptom most directly linked to deficiency of iron and/or magnesium, both of which are essential for chlorophyll synthesis (magnesium as its structural centre, iron as a

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Question ID VK-112727