Answer:
I am bought by the yard but worn by the foot. What am I?
I'm written with two letters, said with one and seen with two. What am I?
I have a head and a tail but my eyes can never see my tail.
I plow and plow, but never sow. What am I?
It's red liquid but not liquid and it's not red. What is it?
It has no top or bottom, but it can hold flesh, bones, and blood all at the same time.