Artificially injecting the cow with the semen obtained from a good and healthy bull is called artificial insemination…
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The differences between Artificial system and Natural System are:- in Artificial system classification occurs without basing on relationship among plants whereas in the later classification occurs on form or natural relationship between plants.
Though natural light is the best and cheapest method of lighting, it is not always available and as such, the use of artificial lighting is preferred. The use of artificial light is preferred because it is available always and these are available in different colours.
Besides natural methods of vegetative propagation, artificial modes of propagation are also being used. Farmers, gardeners and horticulturists have adopted several such methods like grafting, layering, cutting and tissue culture for propagating plants in gardens and nurseries.
The advantages of artificial insemination over natural breeding are artificial insemination make selective breeding easier as semen from a desired breed of bull can be easily transported to distant places and can be used for impregnating cows on a large scale.
Moissan in 1886 was the first to prepare artificial diamonds. He heated a mixture of sugar, charcoal and iron in a crucible in an electric furnace. Iron first melted and then began to boil. It dissolved a good deal of carbon.