A: no, not cannabis at all.
B: yes, thats probably dirt, but not soil which is what you need. It looks more like clay.
C: Google is your friend. Get aquatinted.
There's some strange strains, if you actually picked them out of a bud of decent weed then I'd say give them a try. Check out Ducksfoot and Spyderweb for examples of what I mean, there are people specifically breeding for strains that DON'T look like cannabis for stealth grows and Spyderweb doesn't look like weed even budding, pretty cool