In race mose inflorescence younger flowers are born at the apex or distal end while older flowers are at the base, this type of succession is acropetal succession. Thus, the position of youngest floral but would be distal. 

Acropetal Succession of an Inflorescence

Acropetal succession of an inflorescence refers to the arrangement of flowers in a manner where the older flowers are located at the base and the younger ones are located at the top of the inflorescence.

Position of Youngest Floral Bud

The position of the youngest floral bud in acropetal succession of an inflorescence is at the distal end. This means that the youngest flower is located at the topmost part of the inflorescence.

Explanation

- Acropetal succession of an inflorescence is a type of inflorescence in which the flowers develop in a sequence from the base towards the apex.
- In other words, the lowermost or basal flowers are the oldest and the uppermost or apical flowers are the youngest.
- The acropetal succession is the opposite of the basipetal succession, which is another type of inflorescence where the flowers develop from the apex towards the base.
- In acropetal succession, the growth of the inflorescence is such that the youngest floral bud is located at the topmost part of the inflorescence, while the older flowers are located towards the base.
- Therefore, option D - Distal, is the correct answer, as it refers to the topmost part of the inflorescence, where the youngest floral bud is located in acropetal succession.

Conclusion

Acropetal succession of an inflorescence is a type of inflorescence where the flowers develop from the base towards the apex. In this type of inflorescence, the youngest floral bud is always located at the topmost part of the inflorescence, which is known as the distal end.

In acropetal succession younger floral bud is present towards the apex means at the distal end...