Question

: Bioaugmentation is
A) The addition of commercially prepared bacterial stains with specific catabolic activities to degrade wastes
B) Production of fertilizers by using bacteria
C) The metals are deposited as insoluble oxides and sulfides by the activity of bacteria
D) Removal of pests

Answer 1

Hint: Bioaugmentation is a process that is used to degrade specific soil and groundwater contaminants. It is a type of bioremediation. Bioremediation is the branch of biotechnology that employs the use of living organisms, like microbes and bacteria, in the removal of contaminants, pollutants, and toxins from the soil, water, and other environments.
Complete- Step-by Step-Answer:
Bioaugmentation is the addition of microorganisms that can biodegrade a contaminant. Organisms that originate from contaminated areas may already be able to break down waste, but perhaps inefficiently and slowly. Biological augmentation is the addition of bacterial cultures or archea needed to speed up the rate of degradation of a contaminant. Bioaugmentation is commonly used in municipal wastewater treatment to restart activated sludge Bioreactors. it improves the efficiency and speed of the process of breaking down substances and reduction of toxic particles.
The production of fertilizer by using bacteria is called a biofertilizer. A biofertilizer is a type of fertilizer containing living microorganisms, that enrich the nutrient quality of the soil. The main sources of biofertilizers are bacteria, fungi, and cyanobacteria.
The metals are deposited as insoluble oxides and sulfides by the activity of bacteria this property of bacteria is used in the process called bioleaching. Bioleaching is a simple and effective technology for metal extraction from low-grade ores and mineral concentrates.
Pests must be removed because they can harm our crops as they feed on plant tissues.

Hence the correct option is option (A).

Note: Bioaugmentation is typically only applicable to the bioremediation of chlorinated ethenes, although there are emerging cultures with the potential to biodegrade other compounds including BTEX, chloroethanes, chloromethanes, and MTBE.