MCQ
Life span of human $\text{RBCs}$ is:
- ✓$120$ days.
- B$9$ days.
- C$20$ days.
- D$90$ days.
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| $(a)$ Pila | $(i)$ Flame cells |
| $(b)$ Bombyx | $(ii)$ Comb plates |
| $(c)$ Pleurobrachla | $(iii)$ Radula |
| $(d)$ Taenla | $(iv)$ Malpighlan tubules |
Select the correct option from the following
$(a) \quad (b)\quad (c)\quad (d)$

