Wilts, wood rot, sooty molds, rusts, and smuts. these are all types of plant diseases caused by

Fungi

Fungi are among the most widespread organisms on earth. Many fungi are free living in soil and water while some forms parasitic relationships with plants and animals. Plant diseases caused by fungi reduce the crops, alter the flowers and fruits and finally cause the death of the plant. Examples of fungi with the plant diseases they cause are Magnaporthe grisea (rice blast), Thielaviopsis spp. (canker rot), Ustilago spp. (smuts ) and Phakospora pachyrhizi (soybean rust).

b.