Question
Biology Question on Nutrition
Deficiency symptoms of nitrogen and potassium are visible first in
A
senescent leaves
B
young leaves
C
roots
D
buds.
Answer
senescent leaves
Explanation
Solution
Deficiency symptoms appear first in young leaves and young tissues in case of elements which are relatively immobile inside the plant e.g., Ca, S. For mobile elements like N and K, deficiency symptoms first appear in old and senescent leaves ns the elements are mobilised from senescing regions for supply to young tissues.