Which of the following statement is/ are not correct for single cell protein (SCP) ?

(i) The biomass is obtained from unicellular microorganisms only .

(ii) It provides a protein rich supplement .

(iii) They can be grown easily on materials like waste water from potato processing plants (containing starch), straw, molasses, animal manure ,etc.

(iv) It helps to minimise environmental pollution .

(v) SCP has to be processed before use.

(i) only .

The correct answer is Option (4) - (i) only .

Microbes are being grown on an industrial scale as source of good protein .. One of the alternate sources of proteins for animal and human nutrition is Single Cell Protein (SCP). 

Blue-green algae like Spirulina can be grown easily on materials like waste water from potato processing plants (containing starch), straw, molasses, animal manure and even sewage, to produce large quantities and can serve as food rich in protein, minerals, fats, carbohydrate and vitamins. Incidentally such utilisation also reduces environmental pollution.

SCP can be produced from algae, bacteria, filamentous fungi and yeast. Out of these, some are multicellular.

SCP has to be processed before use to remove excess amount of nucleic acid present in them.