Question: soap is obtained from a group of plants called?
Answer: As the name implies, the crushed roots of soapweed yucca produce a lather that makes a good soap or shampoo. The lathering substances called saponins are found in many plants, but are exceptionally concentrated in yucca roots. In addition, the dried leaves of soapweed yucca can be woven into baskets, mats, or sandals.