Question

Which of the following plant seeds are used as “jewelry’s weights”?
A. Cajanus Cajan.
B. Lens culinaris.
C. Glycine max.
D. Abrus precatorius.

Answer 1

Hint: Some types of the seeds are used as weight in the jewellery making industry as a scale to weight the jewellery and thus refer to as jewellery’s weight. They are bright in colour and have the constant weight. Hence it is used as a parameter of weight in jewellery. They are also used in making jewellery beads, ankle’s etc.

Complete answer:
Abrus precatorious plant is best known for its seeds, these seeds are used as beads and in percussion instruments and which are toxic due to the presence of some toxin. The plant grows in tropical and subtropical areas of the world where it has been introduced. It has a tendency to become weedy and invasive where it has been introduced.
For many years these seeds are used for decorative and gold-weighing basis. In India they are much valued and are used in native jewellery because of their bright colouration. Most of these beans are black and red, more like ladybug, though they also occur in other different types of colours.
The seeds are very consistent in weight. From ages Indians are using these seeds to weigh gold using a unit of measurement called as Ratti, where eight ratti is equal to 1 Masha, further twelve masha is equal to one Tola (One tola weight is about 11.6 Grams). Thus, Cajanus Cajan (pigeon pea), Lens culinaris (lentil) and Glycine max (soya bean) are not used as jwellery’s weight but only Abrus precatorius plant's seeds are used.
As abrus precatorius seeds are used as measurement to weight Jewellery and the seeds of this plant have very consistent weight and weight approximately equal to 105 milligrams.
Hence, the correct option is (D) Abrus precatorius.

Note:
-Cajanus Cajan- Calanus oil is used for reducing weight, lowering blood pressure and for heart disease.
-Lens culinaris- The lentil (Lens culinaris or Lens esculenta) is an edible legume. They are considered to be useful in the treatment of constipation and other intestinal affections.
-Glycine max. - Commonly known as Soybean is the major crop legume needed for the production of human food, animal feed, and biofuel.