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
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
| Column $-I$ | Column $-II$ |
| $(A)$ Physical barriers | $(1)$ Interferon |
| $(B)$ Physiological barriers | $(2)$ Leukocytes |
| $(C)$ Cellular barriers | $(3)$ Tears |
| $(D)$ Cytokinin barriers | $(4)$ skin |
$A$ $B$ $C$ $D$