BotanySelect the correct statement regarding cell wall of plant cells. 

Select the correct statement regarding cell wall of plant cells.
 

  1. A

    Primary cell wall is chiefly composed of a soluble fibrous polysaccharide called suberin.

  2. B

    Secondary cell wall is mainly composed of lignin and is deposited on the outer surface of primary wall.

  3. C

    Pits are present in primary walls whereas they are absent in secondary walls.

  4. D

    The primary cell walls of adjacent cells are cemented through middle lamella which is composed of calcium pectate.

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    Solution:

    Matrix of primary wall mainly consist of water, hemicellulose and glycoproteins. In plants, secondary wall is laid inner to primary wall. Pits are usually absent in a primary wall whereas they often occur in the secondary wall. Cells of a plant tissue are glued by Calcium Magnesium pectate.

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