Does a submissive have certain behaviors? Do submissives do specific tasks?
No behaviors/tasks are set by the Dom. Some subs share certain traits; quietness, being reserved, overly apologizing, or avoiding eye contact. This is not an exhaustive list nor is it true of all subs. Stella for example kicks ass and takes names at work, literally doing the jobs of three people, yet she is also quiet and reserved. No two people are alike, so they will never have the same behaviors, and subs are people too. 😉 When it comes to tasks again no two Doms are alike and no two will want things done the same way.
Here is where I think the sub questions are off point, because subs are a diverse group. The 6’4″ guy I would not want to face in a fight can be, and some of them are, as sub as a petite 5 foot tall blonde. While not all subs share a shape/size/manner/gender, they do share one thing, a mind set. Subs want to please, they want to be of service and making their partner happy makes them happy. The degree to which they are willing to sacrifice their own happiness to me marks the difference between a sub and a slave.
When you think of a submissive and submission, what thoughts come to mind?
Service, strength, vulnerability, love, desire.