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  • (a) The shift from grain to meat diets creates more demands for cereals. Why? (b) A 250 kg cow produces 200 g of protein per day, but 250 g of Methylophillusmethylotrophus can produce 25 tonnes of protein Name this emerging area of research.

(a) The shift from grain to meat diets creates more demands for cereals. Why?

(b) A 250 kg cow produces 200 g of protein per day, but 250 g of Methylophillusmethylotrophus can produce 25 tonnes of protein Name this emerging area of research. Explain its benefits.

Answers (1)

(a) It is a known fact that 90% of the biomass consumed by an organism at a particular trophic level is utilized for its own need and just 10% is available for the organism at the next trophic level. So, to produce 1 kg of meat one needs to spend 3 to 10 kg of grains on the cattle. This shows that a shift from grain to meat diets creates more demand for cereals.

(b) This emerging area of research is called single-cell proteins (SCP). Single-cell protein is formed during the decomposition of organic materials by bacteria, fungi and algae. Single-cell protein provides a very high protein content. The following are the benefits of this process:

i) A higher protein yield per unit of biomass.

ii) Better utilization of solar energy per unit area.

iii) This is an environment-friendly process.

iv) Land requirement is low.

v) Production is independent of seasonal or climatic variations.

vi) This may help in tackling the problem of food security.

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