The amount of _____ in a vegetable increases as the plant matures and causes it to toughen.
a. cellulose
b. hemicellulose
c. pectin
d. lignin
e. gums
Question 2
The cell walls in vegetables gain their structural support from the cell wall fibers, which are indigestible by humans and include all of the following except
a. cellulose.
b. hemicellulose.
c. glucose.
d. lignins.
e. gums.
