MCQ
Thorns, spines and prickles work as _____ in plants.
- ARespiratory organs
- BExcretory organs
- COrgans of offense
- ✓Defensive organs
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$I.$ Primary and secondary phloem gets crushed during secondary growth
$II.$ During secondary growth, primary xylem remains more or less intact
| Column-$I$ (Fungus name) | Column-$II$ (Commonly called) |
| $A$. Puccinia | $I$. Yeast |
| $B$. Ustilago | $II$. Mushroom |
| $C$. Agaricus | $III$. Smut fungus |
| $D$. Saccharomyces | $IV$. Rust fungus |