If you have roots in your pipes, a professional plumber will be able to clear them out using augers and saws. You can also use copper sulfate crystals to poison the roots and prevent them from spreading.
To keep the roots out of your pipes permanently, either replace them with concrete or PVC pipes, or install plastic root barriers around the pipes.
Foxtail palm roots can be damaging to pipes. The roots expand and can harm pipes, and even lift cement at times.
Not if the pipes are in good condition.
Yes they can. Tree roots, as they grow and spread, will "burrow" through pipes that are in their growth, path .. I have personally seen roots inside pipes.
This question doesn't explain what you desire as an answer. Yes, the roots will destroy your pipes as they will drive there way through them. If you have roots in your pipes, no idea. May have to replace all the piping or get someone to remove the roots from the piping for you. Tree roots will not enter pipes unless there is a entry point in the pipe. If pipes are properly sealed there is no problem.
Roundup only kills whatever green matter it touches by translocation to the roots and then kills from the roots up.
No
They are parasites of the fungi associated with plant roots.
Hydrotropism
yes
Any tree that has long roots.
Only if the water pipes are leaking.I know that the roots of the Italian Stone Pine can grow thru sewer lines. It also caused pavement heave and a split in our retaining wall.
Any trees roots will only enter water or drain pipes where there is a break in the line. No tree roots will enter a secure pipe.