Spider plant or grass?

Hey everyone... I have a spider plant - the type with the green and white leaves. I repotted it recently, and not long after, a plant started growing toward the edge of the pot. Now there's a plant with 5 leaves that looks like my spider plant, only the leaves are solid green, like the other type of spider plant. My friend speculated that it was just grass from a seed in the soil I used, but I pulled it out for a look, and the roots look exactly like those of spider plants. It's a dumb question, but does anyone know if there is a way to tell if the plant I've been so carefully tending to is a miracle spider plant or just grass?

Spider plant or grass?
It may possibly be a spider plant. Just keep it a little longer before you toss it out. It may not be grass.
Reply:I believe it's a spider that hasn't fully developed yet. but hey, if you like the plant, what difference does it really make?
Reply:It's probably a spider plant. Some do come in solid green.