Question

Given below are two statements:
Statement (I): Zn deficiency of apple is commonly called “Rosette”
Statement (II): Rosette usually first appears on the summer growth
In light of the above statements, choose the most appropriate answer from the options given below.

• A. Both Statement (I) and Statement (II) are true.
• B. Both Statement (I) and Statement (II) are false.
• C. Statement (I) is true but Statement (II) is false.
• D. Statement (I) is false but Statement (II) is true.

Hint:

Zinc deficiency $\rightarrow$ Little Leaf Rosette in Apple and Citrus.
This is always most prominent during the rapid, early vegetative growth phase in Spring.

Answer 1

The Correct Option is C

The question presents two statements related to the deficiency of Zinc (Zn) in apple trees, often leading to a condition known as “Rosette.” We need to evaluate the truthfulness of each statement.

1. Statement (I): Zn deficiency of apple is commonly called “Rosette.”

Explanation: Zinc deficiency in apple trees causes a condition named “Rosette,” characterized by a cluster or grouping of leaves at the stem's tip due to reduced internode length. This condition is well-documented in horticultural studies.

Verdict: Statement (I) is true.

2. Statement (II): Rosette usually first appears on the summer growth.

Explanation: The condition of “Rosette” typically first becomes noticeable on the spring growth rather than the summer growth. This is because Zinc is an essential micronutrient critical for early development, leaf expansion, and flower formation. Its deficiency is apparent during the vigorous early growth stages of the year.

Verdict: Statement (II) is false.

Considering both statements, we conclude that the correct answer is: Statement (I) is true but Statement (II) is false.