MCQ
Which alphabet indicate dorsal aorta?


- A$P$
- B$R$
- ✓$Q $
- D$S.$

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| Column $-I$ | Column $-II$ |
| $(a)$ Earthworm | $(i)$ Gizzard |
| $(b)$ Cockroach | $(ii)$ Caecum |
| $(c)$ Frog | $(iii)$ Clitellum |
| $(d)$ Rat | $(iv)$ Cloaca |