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"Tissue culture helps to improve the nat...

"Tissue culture helps to improve the nations' economy". Justify.

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(i) Tissue culture is extensively used for large scale propagation of medicinal and ornamental plants.
(ii) It is also used for propagation crop and forest plants.
(iii) It is also used for developing disease - free plants.
(iv) Cell culture is particularly used for extracting ion of many useful metabolites.
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