MCQ
In the ecosystem they placed in third trophical level.
- ✓Human, lion
- BWater plankton, cow
- CPlant plankton, grass
- DBirds, fish
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| Column $- I$ | Column $- II$ |
| $(A)$ Physiological barrier | $(1)$ Skin |
| $(B)$ Cellular barrier | $(2)$ Macrophages |
| $(C)$ Physical barriers | $(3)$ interferons |
| $(D)$ Cytokine barriers | $(4)$ Tears |
| $(5)$ Mucus |
$A.$ Denaturation
$B.$ Annealing
$C.$ Extension