Question

Boron is essential micronutrient, has some regulating role in plant. Mark the correct statement:
A. Regulates the K/Ca ratio in plants
B. Regulates carbohydrate metabolism
C. Require for synthesis of amino acid and protein
D. Structural component of haematin
E. Regulate nitrification process
Choose the correct answer from the options given below:

• A. A, B and C only
• B. A and B only
• C. A, C and D only
• D. A, C and E only

Hint:

Boron functions:
- Cell wall formation (pectin).
- Sugar transport (carbohydrate metabolism).
- K/Ca ratio regulation.
- Pollen germination and tube growth.
Deficiency: Death of growing points, fruit cracking.

Answer 1

The Correct Option is B

Step 1: Understanding the Concept:
This question tests knowledge of the functions of boron in plants.

Step 2: Detailed Explanation:
Boron functions in plants:
- Regulates K/Ca ratio (A): Boron helps in maintaining the balance between potassium and calcium.
- Regulates carbohydrate metabolism (B): Boron is involved in sugar transport and carbohydrate metabolism.
Other functions:
- Cell wall synthesis (borate cross-linking of pectin).
- Pollen tube growth.
- Reproductive development.
Not functions of boron:
- Requirement for synthesis of amino acid and protein (C): This is a function of nitrogen and sulfur.
- Structural component of haematin (D): Haematin contains iron.
- Regulate nitrification process (E): This is not a function of boron.
Thus, A and B are correct.

Step 3: Final Answer:
Thus, the correct answer is A and B only.
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