The primary cell wall of young growing plant cells differs from the secondary cell wall in being:
Answer and explanation
Correct answer: A. Capable of growth and extension, with cellulose microfibrils in a loose matrix
- Step 1: The plant cell wall undergoes dynamic changes during cell differentiation.
- Step 2: The primary wall is formed in young developing cells, possessing high extensibility and plastic deformability to accommodate cell expansion.
- Step 3: As the cell matures and stops expanding, a rigid secondary wall (often reinforced with lignin) is deposited on the inner side (towards the plasma membrane).
Answer
Capable of growth and extension, with cellulose microfibrils in a loose matrix.
Why not the others: Heavily lignified describes the rigid secondary wall; Composed entirely of suberin waxes describes specialized Casparian strips and cork cells; Impermeable to water contradicts the hydrophilic, porous nature of the primary wall.
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