Corn smut and wheat rust are crop diseases caused by what fungi.

The rusts have complicated life cycles which involve the infection of two different plant species. The most well-known members of these groups are wheat rust (Puccinia graminis tritici) and corn smut (Ustilago myadis). Rust fungi attack plants such as ferns, gymnosperms, and flowering plants

Explanation:

name and explain one of the event that occurs during meiosis that increases the variation in offspring even more than simple reproduction?

b is the correct answer