No, unfortunately, is not that simple.
Some verbs form perfective counterparts by changing the stem, eg. rzucać - rzucić.
And then prefixes added to a stem verb just modify or completely change its meaning, in a similar manner to the English phrasal verbs:
throw away, throw up, throw in...
in Polish you have: rzucać, wrzucać, narzucać, wyrzucać, przerzucać, zarzucać, dorzucać... (all imperfective)
or: rzucić, wrzucić, narzucić, wyrzucić, przerzucić, zarzucić, dorzucić - all perfective.
Brać (take) is imperfective; perfective is wziąć.
But ubrać means to dress and is perfective.
So there's no simple logic in it.
This a big Jungle
True.