Question

Match List-I with List-II
\[\begin{array}{|l|l|} \hline \textbf{List-I} & \textbf{List-II} \\ \textbf{PGR} & \textbf{Practical utility} \\ \hline \text{(A). Auxins} & \text{(I). Fruit ripening} \\ \hline \text{(B). Gibberellins} & \text{(II). Root induction} \\ \hline \text{(C). Cytokinin} & \text{(III). Germination} \\ \hline \text{(D). Ethephon} & \text{(IV). Shoot proliferation} \\ \hline \end{array}\]
Choose the correct answer from the options given below:

• (A) - (II), (B) - (III), (C) - (IV), (D) - (I)
• (A) - (I), (B) - (III), (C) - (II), (D) - (IV)
• (A) - (I), (B) - (II), (C) - (IV), (D) - (III)
• (A) - (III), (B) - (IV), (C) - (I), (D) - (II)

Hint:

Remember the 5 classic plant hormones and their main jobs: Auxin (Roots & Tropisms), Gibberellin (Stem elongation & Germination), Cytokinin (Cell division & Shoot growth), Ethylene (Ripening & Senescence), and Abscisic Acid (Dormancy & Stress).

Answer 1

The Correct Option is A

Step 1: Overview:
This question asks to match Plant Growth Regulators (PGRs) with their main uses in horticulture.

Step 2: Matching PGRs to Uses:
Here's how each PGR relates to its application:
\[\begin{array}{rl} \bullet & \text{(A) Auxins: These hormones promote cell growth and differentiation. They are primarily used for (II) Root induction in cuttings.} \\ \bullet & \text{(B) Gibberellins: These hormones break dormancy and encourage stem growth. They are important for (III) Germination.} \\ \bullet & \text{(C) Cytokinin: These promote cell division and are used in tissue culture for (IV) Shoot proliferation.} \\ \bullet & \text{(D) Ethephon: This compound releases ethylene, the ripening hormone. It's used commercially for uniform (I) Fruit ripening.} \\ \end{array}\] The correct matches are: A \(\rightarrow\) II, B \(\rightarrow\) III, C \(\rightarrow\) IV, D \(\rightarrow\) I.

Step 3: Answer:
The correct match set is option 1.