my seed isnt leaving, i dont know if this is normal?

the seedling sprout is 3 days old and is a littl over an inch. it is kinda purple with tiny white hairs growing on it. the seed is broken in half and you can really see the leaves, but the seed hulls are still attatched
how long does it normally take for the seed to fall off the plant
and if its not suposed to be there can i tear it off?

um if u can just lift it right off then ur cool but if its still attached leave it b until its ready to come off or it falls off