Question

Which element mainly occurs i middle lamella?
A.) Ca
B.) Mg
C.) Na
D.) K

Answer 1

Middle lamella have depositions of CA and Mg pectate but if we have to give priority then we will give priority to Ca....Ca is major here. So,option (A)

Answer 2

Option A) is correct i.e "_Ca_"

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The element which mainly occurs in middle lamella is "_Ca_".

Hope it will help u .
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Best of luck ;)
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