Difference between single-seeded fruit and mulit-seeded fruit

A single seeded fruit is like an avocado ,Cherry's  and Mango's multi-seeded fruits are like apples. grapes , Kiwifruit

It basically says it in the name multi and single multi= many  , single = 1

true, i don't really know what you're asking but from the info you provided im guessing the answer is true.

answer; the tunica intima also called tunica interna, consists of elastic fibers,connective tissue and smooth muscle cells;