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?
1
The oil extracted from seeds is used in the manufacture of biodegradable plastics
2
The gum made from its seeds is used in the extraction of shale gas
3
The leaf extract of this plant has the properties of anti-histamines
4
It is a source of high quality biodiesel