b. Carbohydrates digestion begins in the mouth with those animals whose saliva contains the enzyme ptyalin (i.e., non-ruminants).
(Carbohydrates digestion; begins; L:in the mouth with those animals) (those animals; contains; the enzyme ptyalin)
Carbohydrates digestion those animals
begins contains
L:in the mouth with those animals
the enzyme ptyalin