Mark the mismatched pair:

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(B) The mismatched pair is $Oscillatoria - 	ext{Increase alkalinity of soil}$.$Oscillatoria$ is a cyanobacterium that helps in the reclamation of alk

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Oscillatoria - Increase alkalinity of soil

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(B) The mismatched pair is $Oscillatoria - 	ext{Increase alkalinity of soil}$.$Oscillatoria$ is a cyanobacterium that helps in the reclamation of alkaline soils by decreasing their alkalinity, not increasing it.Dragonflies are effective biocontrol agents used to get rid of aphids and mosquitoes.Anaerobic sludge digesters are used in sewage treatment plants to produce biogas.$VAM$ (Vesicular-Arbuscular Mycorrhiza) acts as a biofertilizer by helping plants absorb phosphorus from the soil.

Column $I$	Column $II$
$1.$ $LAB$	$a.$ Quantum $-4000$
$2.$ $Propionibacterium$ $shermanii$	$b.$ Free-living $N_2$-fixer
$3.$ $Acetobacter$ $aceti$	$c.$ Lactic acid production
$4.$ $Clostridium$ $butylicum$	$d.$ Swiss cheese
$5.$ $Pseudomonas$	$e.$ Biogas
$6.$ $Azospirillum$	$f.$ Acetic acid
	$g.$ Butyric acid

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