Please answer my question about germination!?!?

Well my single seed of sour diesel has been germinating for 3 or 4 days now. The problem is that the seed is clearly open and showing the white root inside of it, but the root has not came out. My question is: Since the seed is open but root has not emerged, is it definite that the root will come out in time or should I go ahead and plant it?

PS: This is my first time germinating a weed seed..

Plant it, put a dome over it, get some light on it

Alrite I planted it a half a inch or less deep, put a dome over it, and also put it under a dome. My question now is will it definitely sprout since the seed has opened and showing the root inside? Also how long will it take to sprout? Thx for the help

Be patient and read. How old r u anyways.

im 18 but just started growing