Match the part of the stamen with its description.
| Column I | Column II |
|---|---|
| (a) Anther | (i) The proximal end is attached to the thalamus or petal |
| (b) Filament | (ii) The terminal, generally bilobed structure |
| (c) Microsporangia | (iii) The long and slender stalk |
| (d) Pollen sacs | (iv) Develop further and become pollen sacs |