no. employers don't ask you how many exams or essays you've written throughout your degree. i mean it's possible that some employers care if you've taken certain subjects because it demonstrates an obvious interest in that subject ('why you applying for a commercial law firm when you haven't studied anything remotely commercial' ), but even then that might not always be the case. i know my family law lecturer and past family law lawyer admitted that taking family law wasn't a must to be hired at her firm.
btw moved your thread to the Legal career forum.