Porkchops or any other food items have not been implemented into minecraft: Pocket Edition as of version 0.3.2 alpha. Your character does not require food to regenerate health yet, health will regenerate itself automatically.
Yes you can grow cactus in mine craft Pocket edition ,cuz I have a cactus farm
No.
yes
You dig .
cant you ...............
no
With an iron pickaxe
Tap it
you tap on it
No
theederscrolls
find it and mine it with iron pickaxe or better