MCQ
The second trophic level in a lake is ……………………
- APhytoplankton
- ✓Zooplankton
- CBenthos
- DFishes
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| S.No. | Column $-I$ | Column $-II$ | |
| $A.$ | Amoebiasis | $i$ | Teporema pallidum. |
| $B.$ | Diphtheria | $ii$ | Use only sterilized food and water. |
| $C.$ | Cholera | $iii$ | $\text{DPT}$ vaccine. |
| $D.$ | Syphilis | $iv$ | Use oval rehydration therapy. |