Consider the following four statements (a-d) and select the option which includes all the correct ones only :
- Statements B, C and D
- Statements C, D
- Statements A, C and D
- Statements A, B
Answer
(4) Statements A, B
Solution
A. As per NCERT, microbes like Spirulina can be grown easily on materials like waste water from potato processing plants, straw, molasses, animal manure and sewage to produce large quantities of food rich in protein, minerals, fats, carbohydrate and vitamins — correct.
B. As per NCERT, a 250 kg cow produces 200 g of protein per day, while in the same period 250 g of Methylophilus methylotrophus can produce 25 tonnes of protein — correct.
C. Button mushrooms are rich in protein, not a very rich source of vitamin C — wrong.
D. No rice variety very rich in calcium has been developed; biofortified rice (e.g. Golden rice) is rich in vitamin A (β-carotene) — wrong.
∴ Only A and B are correct.
Answer: (4)