Match the columns and find the correct option
`{:("(a) Munch"," (i) Stomatal movement"),("(b) Darwin"," (ii) Hasterns fruit ripening"),(," by volatiles"),("(c) Cousins"," (iii) Growth of coleoptile"),(," towards light"),("(d) Levitt"," (iv) Nature of enzyme action"),(," (v) Bidirectional transport"),(," in pholem"):}`

Options

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

Answer

To solve the matching question, we will analyze each item in Column 1 and find its corresponding match in Column 2.

### Step-by-Step Solution:

1. **Identify Munch**:
- Munch is associated with the pressure flow hypothesis which explains the movement of sap in the phloem.
- This hypothesis states that phloem shows bidirectional transport.
- **Match**: (a) Munch → (v) Bidirectional transport in phloem.

2. **Identify Darwin**:
- Darwin is known for his work on phototropism, particularly the growth of coleoptiles towards light.
- He studied how the coleoptile bends towards light due to the action of auxins.
- **Match**: (b) Darwin → (iii) Growth of coleoptile towards light.

3. **Identify Cousins**:
- Cousins, specifically H.H. Cousins, is recognized for his research on ethylene, a volatile hormone that promotes fruit ripening.
- Ethylene is produced by fruits and is responsible for the ripening process.
- **Match**: (c) Cousins → (ii) Hasten's fruit ripening by volatiles.

4. **Identify Levitt**:
- Levitt is known for his studies on stomatal movement.
- He described how stomata open due to the influx of potassium ions into guard cells.
- **Match**: (d) Levitt → (i) Stomatal movement.

### Final Matches:
- (a) Munch → (v) Bidirectional transport in phloem
- (b) Darwin → (iii) Growth of coleoptile towards light
- (c) Cousins → (ii) Hasten's fruit ripening by volatiles
- (d) Levitt → (i) Stomatal movement

### Correct Option:
The correct option based on the matches is **Option 3**.

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