Resume is an important document to win an interview.It is a summary of a job candidate's work and educational experience. Employee makes selection from a bundle of resume and tries to find outstanding resume. Most of the resumes are written in the traditional paragraph format that is not easy to read. 

The HR has 100 0f resumes and they will not read the paragraphs.  They'll scan 1-2 lines of each paragraph and probably will not find what they are looking for because they didn't spend the time reading it. Writing your resume in a bulleted format will enable the Hr to scan your resume.  

Bulleted job descriptions are easier to read than the long paragraph. You should write a resume that can be easily read by HR.