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455 questions in this collection · Page 39 of 46
Question 381 of 455
📘 CLASS XII
Microbes In Human Welfare
The use of the activated sludge process for sewage treatment is highly efficient, as no man-made technology has been able to _____ the microbial treatment of sewage.
Till date, no man-made technology has been able to rival the microbial treatment of sewage.
Question 382 of 455
📘 CLASS XII
Microbes In Human Welfare
The biogas plant has an outlet connected to a pipe to supply biogas to nearby _____.
The biogas plant has an outlet, which is connected to a pipe to supply biogas to nearby houses.
Question 383 of 455
📘 CLASS XII
Microbes In Human Welfare
The use of chemical insecticides and pesticides is toxic and extremely harmful to human beings and ____ alike.
These chemicals are toxic and extremely harmful, to human beings and animals alike.
Question 384 of 455
📘 CLASS XII
Microbes In Human Welfare
The bacterium *Bacillus thuringiensis* is available in sachets as dried ____ for spraying onto vulnerable plants.
These [Bt] are available in sachets as dried spores which are mixed with water and sprayed onto vulnerable plants.
Question 385 of 455
📘 CLASS XII
Microbes In Human Welfare
The use of biocontrol measures helps us to avoid heavy use of ____ chemicals for controlling pests.
The biocontrol measures help us to avoid heavy use of toxic pesticides for controlling pests.
Question 386 of 455
📘 CLASS XII
Microbes In Human Welfare
Free-living nitrogen-fixing bacteria in the soil include *Azospirillum* and ____.
Other bacteria can fix atmospheric nitrogen while free-living in the soil (examples Azospirillum and Azotobacter).
Question 387 of 455
📘 CLASS XII
Microbes In Human Welfare
Mycorrhizal association provides plants with resistance to root-borne pathogens and tolerance to salinity and ____.
Plants having such associations show tolerance to salinity and drought.
Question 388 of 455
📘 CLASS XII
Microbes In Human Welfare
The increase in plant growth and development observed in mycorrhizal plants is due to enhanced absorption of ____.
The fungal symbiont... absorbs phosphorus from soil and passes it to the plant.
Question 389 of 455
📘 CLASS XII
Microbes In Human Welfare
Baculoviruses are ideal for ecologically sensitive areas as they have no negative impacts on ____ organisms.
They have been shown to have no negative impacts on non-target insects.
Question 390 of 455
📘 CLASS XII
Microbes In Human Welfare
The dough used for making foods such as dosa and idli is fermented by ____.
The dough, which is used for making foods such as dosa and idli is also fermented by bacteria.