Question

In scapigerous umbel, the flowers are arranged in manner

• A. Corymb
• B. Umbel
• C. Panicle
• D. Monochasial cyme

Answer 1

The correct option is D Monochasial cyme

Corymb is a racemose inflorescence which have slightly shortened axis. Presence of longer pedicel in older flowers and shorter pedicels in younger flowers arrange the flowers at more or less at the same level. Umbel is racemose inflorescence with shortened main axis and presence of a whorl of bracts at tips. Flowers are arranged at the same level in centripetal order. Panicle is a branched raceme in which peduncle bears a number of branches in acropetal order carrying pedicellate flowers in acropetal succession. Monochasial cyme bears a terminal flower at the tip of main stem. A lateral branch is present below the terminal flower which itself ends in a flower. Repeat of this arrangement give a long coiled inflorescence (helicoid cyme). In scapigerous umbel, clusters of flowers develop on the tip which gives resemblance to umbel but it is scorpioid monochasial cyme in which axis is terminated in a terminal flower.
Therefore, the correct answer is option D.