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i) Primary wall of young plants is capable of growth
ii) Primary wall gradually diminishes as the cell matures
iii) Middle lamella is mainly made up of Mg pectate
iv) Proteins are absent in cell wall of higher plants
v) Fluidity of plasma membrane is due to proteins
Which of the following statement/s is/are true ?

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i only

i, ii, iii, iv and v

i and ii

i, ii, iii and iv

answer is C.

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Detailed Solution

Middle lamella is mainly made up of calcium and magnesium pectate. Small amount of glycoproteins, enzymes are present in cell walls of higher plants. Fluidity of plasma membrane is due to lipids.

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