| Column $I$ | Column $II$ |
| $1.$ Fumigation | $a.$ For rare species of plants and animals |
| $2.$ Tissue culture | $b.$ To preserve specimens in jars or bottles |
| $3.$ Collector | $c.$ For protection against fungi,insects,and moisture |
| $4.$ Gene bank | $d.$ For the development of new species |
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