Question
Match the micro-organisms in column A with their action in column $B:$
| S. No. | A | S. No. | B |
| $(i)$ | Bacteria | $(a)$ | Fixing nitrogen |
| $(ii)$ | Rhizobium | $(b)$ | Setting of curd |
| $(iii)$ | Lactobacillus | $(c)$ | Baking of bread |
| $(iv)$ | Yeast | $(d)$ | Causing malaria |
| $(v)$ | A protozoan | $(e)$ | Causing cholera |
| $(vi)$ | A virus | $(f)$ | Causing AIDS |
| $(vii)$ | Penicillium | $(g)$ | Producing antibiotics |