Which protist is responsible for late blight of potatoes, the cause of the Irish potato famine in the mid-19th century?

A) Phytophthora
B) Myxomycota
C) Macrocystis
D) Physarum
E) Giardia

Protist

Any member of a group of diverse eukaryotic, mostly unicellular organisms, including algae, amoebas, and many others.

Late Blight

A serious disease of potatoes and tomatoes caused by the oomycete Phytophthora infestans, leading to significant crop loss.

Phytophthora

A genus of plant-damaging oomycetes, commonly referred to as water molds, responsible for a range of plant diseases.