Multiple choice

Which of these in vitro methods is used by horticulturists for large scale commercial purpose?

  1. Tissue culture

  2. Natural selection

  3. Budding

  4. Spore formation
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A Correct answer
Explanation

Tissue culture is an in vitro (literally 'in glass' - outside living organism) technique where plant cells, tissues, or organs are grown in artificial nutrient medium. It allows mass production of genetically identical plants and is widely used commercially for ornamental plants, crop species, and disease-free plant propagation. Natural selection is not a technique, while budding and spore formation occur in vivo (within living organisms).

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