Match the columns and choose the correct option
`{:(" I"," II"),("(p) Control of weeds","(i) Gibberellin"),("(q) Induction of","(ii) Cytokinin"),(" germination",),("(r) Ripening of fruit","(iii) 2, 4-D"),("(s) Delaying of senescence","(iv) Ethylene"):}`

Options

A. `p-ii, q-iv, r-iii, s-i`
B. `p-iii, q-i, r-iv, s-ii`
C. `p-i, q-ii, r-iv,s-ii`
D. `p-ii, q-iii, r-i, s-iv`

Answer

To solve the matching question, we need to associate the functions of various plant hormones (phytohormones) with their respective hormones. Let's break down the matching step by step:

### Step 1: Identify the Functions and Hormones
We have two columns:
- Column I (Functions):
- (p) Control of weeds
- (q) Induction of germination
- (r) Ripening of fruit
- (s) Delaying of senescence

- Column II (Hormones):
- (i) Gibberellin
- (ii) Cytokinin
- (iii) 2, 4-D
- (iv) Ethylene

### Step 2: Match Each Function with the Correct Hormone
1. **Control of weeds (p)**:
- The hormone that is known to control weeds is **2, 4-D**, which is a synthetic auxin.
- **Match: (p) → (iii)**

2. **Induction of germination (q)**:
- The hormone that induces germination is **Gibberellin**. It plays a crucial role in breaking dormancy and promoting seed germination.
- **Match: (q) → (i)**

3. **Ripening of fruit (r)**:
- The hormone responsible for the ripening of fruits is **Ethylene**. It is often referred to as the ripening hormone.
- **Match: (r) → (iv)**

4. **Delaying of senescence (s)**:
- The hormone that delays senescence (aging) of leaves is **Cytokinin**. It promotes cell division and helps in maintaining leaf vitality.
- **Match: (s) → (ii)**

### Step 3: Compile the Final Matches
Now we can summarize the matches:
- (p) Control of weeds → (iii) 2, 4-D
- (q) Induction of germination → (i) Gibberellin
- (r) Ripening of fruit → (iv) Ethylene
- (s) Delaying of senescence → (ii) Cytokinin

### Final Answer
The correct matches are:
- (p) → (iii)
- (q) → (i)
- (r) → (iv)
- (s) → (ii)

Thus, the correct option is: **(p) - (iii), (q) - (i), (r) - (iv), (s) - (ii)**.