Question

What is the family of Rhubarb ?

• A. Apiaceae
• B. Euphorbiaceae
• C. Convolvulaceae
• D. Polygonaceae

Hint:

Rhubarb (Rheum species) belongs to the Polygonaceae family. Key characteristics of this family often include swollen stem nodes and a sheathing stipule (ocrea) at the leaf base. Other common members are buckwheat and sorrel.

Answer 1

The Correct Option is D

Step 1: Rhubarb shows swollen stem nodes and a papery ocrea, typical of the buckwheat family.
Step 2: Its close relatives sorrel and buckwheat are also Polygonaceae members.
Step 3: Apiaceae, Euphorbiaceae and Convolvulaceae lack this nodal/ocrea feature.
Step 4: Correct answer: Polygonaceae.