Match and find the correct match
`{:(" I"," II"),("(a) 2, 4-D","(i) Promotion of lateral"),(," shoot growth"),("(b) GA"_(3),"(ii) Thinning in cotton"),("(c) Ethephone","(iii) Stress tolerance"),("(d) ABA","(iv) Brewing industry"),(,"(v) Weed free lawns"):}`

Options

A. `a-ii, b-i, c-v, d-iii`
B. `a-v, b-iv, c-ii, d-iii`
C. `a-v, b-iv, c-i, d-iii`
D. `a-iii, b-ii, c-i, d-iv`

Answer

To solve the matching question, we need to identify the correct associations between the plant growth regulators (I) and their respective functions or uses (II). Let's break it down step by step.

### Step 1: Analyze the options
We have four plant growth regulators:
1. 2,4-D
2. GA3 (Gibberellic Acid)
3. Ethylene (Ethephone)
4. ABA (Abscisic Acid)

And we have the following functions/uses:
i. Promotion of lateral shoot growth
ii. Thinning in cotton
iii. Stress tolerance
iv. Brewing industry
v. Weed free lawns

### Step 2: Match each regulator with its function

**(a) 2,4-D**
- 2,4-D is a herbicide commonly used for weed control. It is effective in creating weed-free lawns.
- **Match: (a) 2,4-D → (v) Weed free lawns**

**(b) GA3**
- GA3 is a gibberellin that promotes growth and is often used in the brewing industry to enhance the fermentation process.
- **Match: (b) GA3 → (iv) Brewing industry**

**(c) Ethephone**
- Ethephone is a plant growth regulator that promotes the ripening of fruits and is used in thinning cotton plants.
- **Match: (c) Ethephone → (ii) Thinning in cotton**

**(d) ABA**
- ABA is known as the stress hormone in plants, playing a crucial role in stress tolerance mechanisms.
- **Match: (d) ABA → (iii) Stress tolerance**

### Step 3: Compile the matches
Now, we can summarize the correct matches:
1. (a) 2,4-D → (v) Weed free lawns
2. (b) GA3 → (iv) Brewing industry
3. (c) Ethephone → (ii) Thinning in cotton
4. (d) ABA → (iii) Stress tolerance

### Final Answer:
- (a) 2,4-D → (v) Weed free lawns
- (b) GA3 → (iv) Brewing industry
- (c) Ethephone → (ii) Thinning in cotton
- (d) ABA → (iii) Stress tolerance

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