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Q.

Study the following : 
(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 above statements are true?

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a

i & ii 

b

i, ii & v

c

i, ii & iii

d

i, ii, iii & iv

answer is C.

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Detailed Solution

Middle lamella is mainly made up of Ca – pectate. 
Proteins are also present in cell wall of higher plants.
Fluidity of plasma membrane is due to lipids.

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