MCQ
Thorns, spines and prickles work as _____ in plants.
- ARespiratory organs
- BExcretory organs
- COrgans of offense
- ✓Defensive organs
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$A.$ Cyanophyceae $a.$ Green colour
$B.$ Chlorophyceae $b.$ Blue green colour
$C.$ Phaeophyceae $c.$ Red colour
$D.$ Rhodophyceae $d.$ Brown colour