exactly! the vibrations of strings is what makes the sound. the wood and construction methods used (bolt on, neck thru, neck glued, side blanks, veneer, headstock joint, thickness, stabilization due to hand and body touching, every place that is glued on...) essentially creates a platform. my analogy is going to be that the strings are your force, nut/frets and bridge(anywhere the strings contact really) tectonic plates, and the body being your earth (all based loosely off of my knowledge of earthquakes) and your pick-ups being seismographs. Seismographs pick up the force of an earthquake, the force resonates on the tectonic plates, which are held by the earth (and gravity) as to not just be a constantly morphing blob. since the earth holds the tectonic plates in a certain way only allowing them to resonate to a certain degree, the earth, or your guitar body, does affect what the seismograph puts out. a marsquake should be different from an earthquake, if mars even has quakes, but you will get a similar feeling of panic as you race to the nearest doorway of your mars colony
since the strings' ability to vibrate is affected by what it touches (fingers included) yes the wood and construction does affect tone. how noticeable it is... now that is the question.
at this point I'm gonna drop some nirvana on everything and say that one should find what they like or continue to explore, that's what's always been the fun part for me. if you make a guitar out of a wood that some may say sounds inferior though you like it, CRANK IT UP TO 11!!!!!