One week old embryo can be preserved at

  • A
    $-196^{\circ}C$
  • B
    $-200^{\circ}C$
  • C
    $-270^{\circ}C$
  • D
    None of these

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The technique of producing a large number of genetically similar plants within a short time by tissue culture is called:

Which of the following statements is false?

In the initial stages of protoplast culture,sorbitol or mannitol is added:

Plants,in comparison to animals,are more rapidly manipulated by genetic engineering. Select the most probable reason for this.

Which method is used to develop new plant species in botanical gardens?

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