2014 Economy - Agriculture

In India, cluster bean (Guar) is traditionally used as a vegetable or animal feed, but recently the cultivation of this has assumed significance. Which one of the following statements is correct in this context?

• The oil extracted from seeds is used in the manufacture of biodegradable plastics
• The gum made from its seeds is used in the extraction of shale gas
• The leaf extract of this plant has the properties of anti- histamines
• It is a source of high quality biodiesel