Multiple choice

Late blight of potato is caused by:

  1. alternaria solani

  2. phytophthora infestans

  3. helminthosporium oryzae

  4. puccinia graminis
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Phytophthora infestans is an oomycete (water mold) pathogen that causes late blight of potato. This disease was responsible for the Irish Potato Famine in the 1840s. The other options are: Alternaria solani (causes early blight), Helminthosporium oryzae (rice brown spot pathogen), and Puccinia graminis (stem rust of cereals).

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