Cell walls have……..fundamental parts.
a) two
b) three
c) four
d) five
Explanation: middle lamella, primary wall and secondary wall
In which of the following plant tissues, middle lamella is lignified?
a) Meristematic tissues
b) mesophyll tissues
c) woody tissues
d) epidermal tissues
Explanation: Lignin is a class of complex organic polymers that form key structural materials in the support tissues of most plants.
What is the thickness of middle lamella?
a) 1µm
b) 1-3µm
c) 5-10µm
d) 10-15µm
Which of the following is/are the characteristic/s of primary cell wall?
a) more or less elastic
b) extendible and crystalline
c) optically active
d) all of these
What is the thickness of primary cell wall?
a) 1µm
b) 1-3µm
c) 5-10µm
d) 10-15µm
Primary cell wall is composed of ………
a) cellulose
b) pectic compound usually polysaccharides
c) hemicelluloses
d) all of these
