Identify the mismatched pair.

Select the incorrect statement from the following options.

Select the correct option:
$(1)$ During $transamination$ / $reductive$ $amination$,an amino group is transferred from one amino acid to the keto group of a keto acid.
$(2)$ $Azotobacter$ / $Clostridium$ are free-living bacteria.

Match the following columns:

Column-$I$	Column-$II$
$1.$ Mycorrhiza	$a.$ Free-living $N_2$-fixer
$2.$ Nostoc	$b.$ Phosphorus absorption
$3.$ Azospirillum	$c.$ Leguminous plants
$4.$ Rhizobium	$d.$ Autotrophic $N_2$-fixer

Statement $P$: In vertebrates,about $70$ percent of the total phosphorus is incorporated into bones and teeth.
Statement $Q$: Phosphorus is a structural component of vitamins like biotin and thiamine.

Assertion : Plants absorb sulphur in the form of sulphate ions.
Reason : Sulphur bacteria are required for the formation of sulphate.