Which element mainly occurs in middle lamella?

Ca pectate

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Mg pectate

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Na pectate

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K pectate

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Solution

The correct option is A Ca pectate
A plant cell is characterised by the presence of a cellulosic cell wall outside the cell membrane. The cell wall is dead at maturity. The cell walls of adjacent cells are joined together by the presence of cementing middle lamella. The middle lamella comprises of calcium pectate.

Suggest Corrections

	I		II
(p)	Plasma membrane mainly contains	(i)	Hemicellulose
(q)	Middle lamella is mainly composed of	(ii)	Calcium pectate
		(iii)	Proteinaceous filaments
		(iv)	Proteins embedded m phospholipid bilayer