AIPMT PRELIMS2006Botany-Plant Growth and Development
AIPMT PRELIMS 2006 Botany Hormonal Regulation MCQ Question
Type: MCQ-conceptual-Medium-Class 11
Farmers in a particular region were concerned that pre-mature yellowing of leaves of a pulse crop might cause decrease in the yield. Which treatment could be most beneficial to obtain maximum seed yield?
A
Frequent irrigation of the crop
B
Treatment of the plants with cytokinins along with a small dose of nitrogenous fertilizer
C
Removal of all yellow leaves and spraying the remaining green leaves with 2, 4,⁵⁻trichlorophenoxy acetic acid
D
Application of iron and magnesium to promote synthesis of chlorophyll
Correct Answer
Option D
Detailed Explanation
Cytokinins and nitrogenous fertilizers promote growth and delay leaf senescence, improving yield.
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