What is mechanical digestion?
Match the following :
A
B
(a)
machine
(1)
chemical energy
(b)
winding up clockwork
(2)
kinetic energy
(c)
digestion, excretion
(3)
mechanical energy
(d)
rolling object
(4)
physical energy
(e)
wood
(5)
potential energy
Write a short note on mechanical digestion and chemical digestion. Name the location where both the types take place. [3 MARKS]
There is a mechanical component to digestion. Why is it preferable to break food items into smaller pieces?