Cluster bean contains mucilaginous substance is

Solution(By Examveda Team)

Cluster bean commonly known as guar has come to be recognized as one of the most important commercial crops of arid and semi-arid regions. It is a drought-hardy leguminous crop because of its deep tap rooting system and has a high capacity to recover from water stress.
Cluster bean contains a mucilaginous substance that is Mannogalacton. The seed of cluster bean contains about 30 - 33% gum in the endosperm. The discovery of the Mannogalacton gum in the endosperm in 1948, led to this hitherto insignificant plant gaining importance as an industrial crop.