MCQ
Which have minimum concentration of urea in blood
- ARenal arteries
- ✓Renal vein
- CAortic arteries
- DVena cava
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$II.$ It consists of cells which are thickened at the corners
$III.$ It often contains chloroplast
$IV.$ Intercellular spaces are absent
$V.$ They provide mechanical support to growing parts of plants The above characters are attributed to