Question

Read the sources given and answer any four from the questions given below:

Golden rice is a genetically modified variety of rice (Oryza sativa) produced through genetic engineering. It is rich in beta carotene, a precursor of vitamin A. Golden rice is meant to overcome vitamin A deficiency, deficiency of which causes blindness in children in the developing world. It differs from the parental strains as it contains three beta-carotene genes. Two are isolated from daffodil plant and the third gene from a bacterium. This combination of genes allows the rice plant to synthesise beta-carotene by modifying certain metabolic pathways. Fortified with beta-carotene, this genetically modified rice crop has good yield and is more tolerant to abiotic stresses.

1. Golden rice, a variety of rice has enhanced nutritional value due to the presence of
   1. Vitamin A
   2. beta-carotene
   3. bacterium
   4. daffodil genes
2. The genetically modified variety of rice is produced by introducing
   1. two genes of daffodil plant
   2. one gene of a bacterium
   3. both (a) and (b)
   4. a bacterium with desired gene
3. The genetically modified variety of rice stores its nutrients in its
   1. roots
   2. stem
   3. leaves
   4. seeds
4. Golden rice is called a genetically modified crop because it
   1. gives good yield
   2. rich in carbohydrates and proteins
   3. has a gene from bacterium
   4. more tolerant to abiotic stress
5. Golden rice can help to overcome the deficiency of following in children.
   1. carbohydrates
   2. vitamin A
   3. vitamin B
   4. minerals

Answer 1

1. beta-carotene
2. both (a) and (b)
3. seeds
4. has a gene from bacterium
5. vitamin A