Match the following Columns
`{:(,"Column I",,"Column II"),(A.,"Collateral and open",(i),"Cucubita stem"),(B.,"Radial",(ii),"Fern"),(C.,"Bicollateral",(iii),"Maize root"),(D.,"Concentric",(iv),"Sunflower"),(,,(v),"Maize stem"):}`

Options

A. `{:(A,B,C,D),("(v)",(iv),(iii),(i)):}`
B. `{:(A,B,C,D),((iv),(iii),(i),"(ii)"):}`
C. `{:(A,B,C,D),((iv),(i),(iii),"(ii)"):}`
D. `{:(A,B,C,D),((iv),(iii),(ii),"(i)"):}`

Answer

To solve the matching question, we need to understand the types of vascular bundles and their characteristics. Let's analyze each option step by step.

### Step-by-Step Solution:

1. **Understanding Collateral and Open**:
- In collateral vascular bundles, the phloem is located on one side and the xylem on the other side, and they are open because there is a cambium present between them.
- **Match**: (A) Collateral and open - (iv) Sunflower (as it has open collateral bundles).

2. **Understanding Radial**:
- Radial vascular bundles have xylem and phloem arranged in a radial manner, typically found in roots.
- **Match**: (B) Radial - (iii) Maize root (as it exhibits radial vascular bundles).

3. **Understanding Bicollateral**:
- Bicollateral vascular bundles have phloem on both sides of the xylem, and this arrangement is commonly found in certain plants.
- **Match**: (C) Bicollateral - (ii) Fern (as some ferns exhibit bicollateral bundles).

4. **Understanding Concentric**:
- In concentric vascular bundles, either xylem surrounds phloem or vice versa. This arrangement is typical in some monocots.
- **Match**: (D) Concentric - (v) Maize stem (as maize stem has concentric vascular bundles).

### Final Matches:
- A - iv (Collateral and open - Sunflower)
- B - iii (Radial - Maize root)
- C - ii (Bicollateral - Fern)
- D - v (Concentric - Maize stem)

### Summary of Matches:
- (A) Collateral and open - (iv) Sunflower
- (B) Radial - (iii) Maize root
- (C) Bicollateral - (ii) Fern
- (D) Concentric - (v) Maize stem