AP BIOLOGY

Detailed explanation-1: -It is a disease occurring in rice crops due to the presence of the fungus Gibberella fujikuroi. It happens because of excess release of Gibberellins in the rice plant.

Detailed explanation-2: -Gibberellins were first discovered in Japan when rice plants were suffering from bakane (the foolish seedling disease) caused by a fungus Gibberella fujikuroi.

Detailed explanation-3: -Such seedlings produce empty panicles and cannot bear their own weight resulting in their lodging and death. Hence, the name is foolish seedling. Foolish seedling is caused due to gibberellins produced by the fungus Gibberella fujikuroi.

Detailed explanation-4: -The affected plants, which are visibly etiolated and chlorotic, are at best infertile with empty panicles, producing no edible grains; at worst, they are incapable of supporting their own weight, topple over, and die (hence “foolish seedling disease").

Detailed explanation-5: -Gibberella fujikuroi is a fungal plant pathogen. It causes bakanae disease in rice seedlings.