MCQ
Identify $X$ and $Y$
- A$X $- pulmonary, Vein, $Y -$ Artery
- B$X -$ Vena cava, $Y -$ Capillary
- ✓$X -$ Dorsal aorta, $Y-$ Pulmonary artery
- D$X -$ Vena cava, $Y -$ Dorsal aorta
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$CO _{2}+ H _{2} O \stackrel {A} {\rightleftharpoons} H _{2} CO _{3} \stackrel {B} {\rightleftharpoons} \rightleftharpoons HCO _{3}^{-}+ H ^{+}$
| Column $- I$ (Organism) |
Column $-II$ (Excretory |
||
| $A$ | Cockroach | $I$ | Nephridia |
| $B$ | Cat fish | $II$ | Malpighian tubules |
| $C$ | Earthworm | $III$ | Kidneys |
| $D$ | Balanoglossus | $IV$ | Flame cells |
| $E$ | Flatworm | $V$ | Proboscis gland |