47.On the basis of symptoms of chlorosis in leaves a student inferred that this was due to deficiency of nitrogen. This inference could be correct only if we assume that yellowing of leaves appeared first in: A. Old leaves B. Young leaves C. Young leaves followed by mature leaves D. Mature leaves followed by young leaves
Option A. This inference could be correct only if yellowing of leaves appeared first in young leaves followed by old leaves. Chlorosis is the main symptom of nitrogen deficiency. As a result, the leaves gradually become pale or yellow.
