Which of the following is true with respect to plant cell walls?
A) They contain n-acetylglutamic acid.
B) They all have secondary cell walls to some extent.
C) There is a greater amount of cellulose in secondary cell walls than in primary cell walls.
D) Lignin is found in primary cell walls of plants.

Question

Quizplus · Accepted Answer

Secondary cell walls have a higher concentration of cellulose. Primary cell walls have a lower concentration of cellulose and contain other molecules such as pectin and hemicellulose.

Answer: B
 Not all plant cells have secondary cell walls. These are found in specialized cells such as xylem and sclerenchyma.

Answer: None of the above
 None of the answer choices mention the main component of plant cell walls, which is cellulose. Additionally, lignin is found primarily in secondary cell walls, not primary cell walls. N-acetylglutamic acid is not a component of plant cell walls.

Which of the Following Is True with Respect to Plant