Question

In a raceme, the flower arrangement is?
A. Basipetal
B. Centripetal
C. Centrifugal
D. Acropetal

Answer 1

Hint: In raceme, there is indeterminate inflorescence seen and flowers are that way that the younger flowers are present towards the apex and the older flowers are present at the base.

Complete answer:
Raceme is a flower cluster with indeterminate inflorescence in which the flowers are borne on short pedicels and the peduncle has bisexual and pedicellate flowers which are arranged acropetally, for example, radish is a type of racemose inflorescence where the shoot axis continue to grow indefinitely and the flowers arrangement is acropetal.
Acropetal flower arrangement means the younger flowers are present towards the apex and the older flowers are present at the base.

> Option A is Basipetal. This flower arrangement is not seen in raceme but it is seen in cymose inflorescence where the main axis terminated into a flower and it has limited growth. Therefore, this option is incorrect and it gets eliminated.

> Option B is centripetal. In this type of flower arrangement, older flowers are near the edge and the youngest flowers are in the center. But in raceme, acropetal arrangement is seen where older flowers are present at the base and younger flowers are present towards the apex.

> Option C is Centrifugal. There is no such flower arrangement seen and this cannot be the correct option flow raceme flower arrangement and therefore, it gets eliminated.

> Option D is Acropetal. This type of flower arrangement is seen in raceme where the younger flowers are present towards the apex and the older flowers are present at the base. Therefore, this option is the correct one.

Hence, the correct answer is option (D).

Note: Acropetal flower arrangement is seen in raceme where the peduncle has bisexual and pedicellate flowers which are arranged acropetally and the younger flowers are present towards the apex and the older flowers are present at the base. Indeterminate inflorescence is seen.