Question

Which describes the mechanical digestion process?

Answer D

Answer 1

Mechanical digestion

Food is taken into the mouth where it is broken down into smaller pieces by the teeth. As the teeth grip, cut and chew the food, saliva is released and mixes with the smaller food particles. Saliva moistens and lubricates the food, allowing it to be worked into a small ball called a bolus, which can then be easily swallowed.

This mechanical work on the food not only greatly increases its surface area but also allows it to be mixed with a digestive enzyme present in saliva.

Hope this will help you ^_^

Answer 2

Mechanical digestion:-

It begins from mouth. In mouth food is chewed. Chemical digestion involves breaking down the food into simpler form. Then the food mixes with saliva. Saliva contains an enzyme called amylase that begins the breakdown of carbohydrates.