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Solution


Q.

Which of the following is true for Golden rice                     [2019]
1 It has yellow grains, because of a gene introduced from a primitive variety of rice.  
2 It is vitamin A enriched, with a gene from daffodil.  
3 It is pest resistant, with a gene from Bacillus thuringiensis.  
4 It is drought tolerant, developed using Agrobacterium vector.  

Ans.

(2)

Rice is a staple food in many countries, particularly in Asia, but does not contain vitamin A or its immediate precursors. By inserting two genes from daffodil and one gene from a bacterial species into rice plants, Swiss researchers have produced rice capable of synthesizing β-carotene, the precursor of vitamin A. Vitamin A is required by all individuals as it is present in retina of eyes. Deficiency of vitamin A causes night blindness and skin disorders. This rice is called ‘Golden rice’ because of the yellow color of rice grains due to the presence of β-carotene.