Environment ieeebiography undefined \begin ieeebiography

Mostly in research community Latex is used to write the articles that are published in different journals. Biography section is the last section in all articles. IEEEtran and elsarticle are the most widely used latex template which offer multiple commands to represent the research content/data in different manner. For example, IEEEbiography command is used to write the biography section in IEEEtran template. But no such similar command is available if you write the article using elsarticletemplate.

In reality, you don’t need any special command to write author’s biography if you are using elsarticle template. You can compare both the papers. The first paper is published in IEEE and the second is published in Elsevier.
IEEE paper: http://ieeexplore.ieee.org/document/8169111/?anchor=authors
Elsevier paper: https://www.sciencedirect.com/science/article/pii/S0164121216300887#b1

In elsarticle template, you can use following simple code to add biography section.