Biological Classification Question 110

110. Claviceps purpurea is causal organism of

(a) Smut of Barley

(b) Rust of Wheat

(c) Ergot of Rye

(d) Powdery Mildew of Pea.

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Answer : c

Hints & Solutions

(c) The fungus that causes the disease ‘Ergot of Rye’ is Claviceps purpurea. It contains many poisonous alkaloids. The hallucinogenic drug LSD is extracted from this fungi.

  • Rust of wheat is used by Puccinia graminis.
  • Powdery mildew ofpeais causedby Erysiphae.


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