Question

Match the LIST-I with LIST-II

LIST-I Minerals	LIST-II  Deficiency Symptoms in Plants
A. Calcium	III. Necrosis of young meristematic regions such as root tips or young leaves
B. Zinc	IV. Display of rosette habit
C. Manganese	I. Intervenous chlorosis associated with the development of small necrotic spots
D. Nickel	II. Accumulation of Urea in the leaves

Choose the correct answer from the options given below:

• A. A-I, B - II, C - III, D - IV
• B. A-I, B - III, C - II, D - IV
• C. A-I, B - II, C - IV, D - III
• D. A-III, B - IV, C - I, D - II

Hint:

Focus on unique symptoms: "Rosette habit" is a keyword for Zinc deficiency. "Necrosis of young tips" points to an immobile element like Calcium. "Urea accumulation" is specifically linked to Nickel's role in the urease enzyme.

Answer 1

The Correct Option is D

Step 1: Concept Overview:
This question involves associating essential mineral elements with their corresponding deficiency symptoms in plants.
Step 2: Detailed Explanation:


A. Calcium (Ca): As a key structural element in cell walls (calcium pectate), calcium's immobility means deficiency symptoms manifest in young tissues. A primary symptom is the necrosis of young meristems, such as root tips and young leaves. Therefore, A corresponds to III.

B. Zinc (Zn): Crucial for auxin synthesis (a cell elongation hormone), zinc deficiency results in reduced auxin, causing stunted growth and short internodes, leading to a rosette habit. Thus, B corresponds to IV.

C. Manganese (Mn): An enzyme activator and vital for photosynthesis' water-splitting, manganese deficiency induces interveinal chlorosis and necrotic spots. Therefore, C corresponds to I.

D. Nickel (Ni): As a component of urease (essential for urea metabolism), nickel deficiency causes urea to accumulate, leading to leaf tip necrosis. Thus, D corresponds to II.

Step 3: Conclusion:
The correct matches are A-III, B-IV, C-I, D-II, aligning with option (D).