Question

Umbel inflorescence is found in

• A. Musa
• B. Colocasia
• C. Coriandrum
• D. Helianthus

Answer 1

The correct option is C Coriandrum

Inflorescence is the arrangement of flower on the floral axis. There are two types of inflorescence as racemose and cymose. In racemose type, the main axis is unlimited in growth. It never terminates into a flower. There are many sub-types of racemose inflorescence. Of them, umbel inflorescence is one of the sub-type of racemose.
Umbel inflorescence contain a very shortened and suppressed axis. It contains flowers with equal length stalks and form a cluster. It gives an umbrella like appearance.
Musa and Colocasia possess spadix type of inflorescence. Spadix also belongs to racemose type of inflorescence. It has a spike with fleshy axis which is enclosed by one to many, large bracts. The flowers are borne inside this structure.
Helianthus possess head or capitulum type of inflorescence. Head or capitulum also belongs to racemose type of inflorescence. It possess a flattened, convex main axis called receptacle. This receptacle bears flowers in centripetal order. The whole inflorescence is surrounded by a whorl of bracts.
Coriandrum shows umbel inflorescence with a very shortened and suppressed axis. It contains flowers with equal length stalks and form a cluster. It gives an umbrella like appearance.
Therefore, the correct answer is option C.