4(iii)
Differentiate between an artery and a vein with reference to size of lumen.
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| Artery | Vein |
|---|---|
| It has a narrow lumen. | It has a wide lumen. |
Differentiate between an artery and a vein with reference to size of lumen.
ICSE Class 10 Biology PYQ · 2026 Improvement · Section B