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(a) Single cell proteins can be used as ...

 (a) Single cell proteins can be used as an alternate source of proteins for human nutrition. Illustrate with two examples.
(b) How can tissue culture be applied to recover healthy plants from virus-infected plants?

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(a) (i) Microbes like spirulina can be grown easily on material like waste waiter from potato processing plants , straw , molasses of food rich in proteins.
(ii) 250 g of microorganism ,Methylophilus mrthltrophus can produced about 200 g of protein per day . thus SCP can be used as an alternate source of proteins for human nutrition.
(b) Although th eplants is infested with a virus , the meristen is free of virus . Hence the meristem can be grown in invitro condition to obtain virus free plants .
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