All of the following may be the means of propagating those plants which do not produce viable seeds, except
A
Grafting
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B
Layering
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C
Cutting
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D
Gamete fusion
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Solution
The correct option is D Gamete fusion The plants which cannot be produced through viable seeds can be artificially propagated through various methods such as cutting, layering and grafting. These all are asexual modes of reproduction. Gametic fusion is a sexual mode of reproduction that can only occur if the plant produces viable seeds.