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Get Answers to all your Questions
Assertion (A): Plant cell differs from bacterial cell wall.
Reason (R): The plant cell walls are made up of peptidoglycan and the cell wall lacks cellulose.
Both A and R are true and R is the correct explanation of A.
Both A and R are true but R is not the correct explanation of A.
A is true but R is false.
A is false but R is true.
Answers (1)
The bacterial cell wall is mostly made up of a polymer known as peptidoglycan, and it lacks cellulose. Plant cell walls are composed of cellulose, hemicellulose, pectin, and lignin. Hence option 3 is the correct answer.
Explanation for the incorrect options :
Option 1 is incorrect because lignin, pectin, cellulose, and hemicellulose make up the plant cell wall. The cell wall is composed of three layers: the middle lamella, the primary cell wall, and the secondary cell wall. All plants, however, lack a secondary cell wall.
Option 2 is incorrect because the reason is not correctly explaining the assertion.
Option 4 is incorrect because the bacterial cell wall is mostly composed of peptidoglycan, a polysaccharide. Furthermore, gram-positive bacteria have teichoic acid in their cell walls. Lignin, pectin, cellulose, and hemicellulose make up the plant cell wall. The middle lamella, main cell wall, and secondary cell wall do not exist in bacterial cell walls. The plant cell wall is composed of three layers: the middle lamella, the primary cell wall, and the secondary cell wall. All plants, however, lack a secondary cell wall. Hence assertion is true.
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