What are two macromolecules important to the plant cell wall that are NOT polysaccharides?
What are their roles?
Solution
The plant cell wall is primarily made of the polysaccharides cellulose, hemicellulose and pectin.
However, it also contains the other macromolecules including suberin and lignin, which are
complex organic polymers.
Lignin is a phenolic polymer present in the cell walls of vascular plants, which drives out water
and strengthen the cell wall. It is synthesized in the cells that become part of the transport
system. It is one of the major constituent in the secondary wall of tall plants, means, it make up
the woody material of tall plants.
Suberin is formed in the cells of endodermis and exodermis of the root. Its function is to
strengthen the cell wall and regulate water movement, it resist the movement of air and water. In
the aerial parts of the plant, it is associated with the defense response of the plant..
What are two macromolecules important to the plant cell wall that ar.pdf
1. What are two macromolecules important to the plant cell wall that are NOT polysaccharides?
What are their roles?
Solution
The plant cell wall is primarily made of the polysaccharides cellulose, hemicellulose and pectin.
However, it also contains the other macromolecules including suberin and lignin, which are
complex organic polymers.
Lignin is a phenolic polymer present in the cell walls of vascular plants, which drives out water
and strengthen the cell wall. It is synthesized in the cells that become part of the transport
system. It is one of the major constituent in the secondary wall of tall plants, means, it make up
the woody material of tall plants.
Suberin is formed in the cells of endodermis and exodermis of the root. Its function is to
strengthen the cell wall and regulate water movement, it resist the movement of air and water. In
the aerial parts of the plant, it is associated with the defense response of the plant.
