Disease and pest resistant varieties have been evolved by ________. __________ is the production of silk by the activity of worm known as silk worms. Domesticating the honeybee for the honey production is known as __________. A large number of organism damage useful plants and animals, which are called __________. Substances, whose presence in air, water or soil is harmful to living thing and soil, are termed as __________.
Sources of water and soil pollution are municipal wastes, industrial wastes and _______ wastes. The substances whose presence in air, water or soil is harmful are termed as: The ozone layer around the earth filter out: Rain containing the atmospheric pollutant of acid is known as: The protozoan as secondary consumers feed on these: Insulin produced by genetic engineering is exactly the same as ordinary _________ insulin. Acetone and methyl alcohol are among the _________ of other type of microbial fermentation. Oxygen is the upper atmosphere forms ozone that forms a layer over the earth.
Untreated sewage is source of germs causing cholera and typhoid. Any organism which acquires a foreign gene is called: Genetic engineering is of great importance and has application in: In baking industry brewing is carried out by: Nitrogen fixing bacteria live inside the roots of: Bacillary dysentery is caused by round shaped (Cocci) bacteria. Antibiotics are used to kill pathogenic bacteria but they do not harm viruses. In man, the parasite enters through the bite of a male anopheles mosquito. Protozoan are single tissue organism, which vary in size and shape.