Question

Middle lamella is mainly composed of

• A. Hemicellulose
• B. Calcium pectate
• C. Muramic acid
• D. Phosphoglycerides

Answer 1

The correct option is B Calcium pectate

• The middle lamella is a layer rich in pectins which cement the cell walls of adjacent plant cells and forms plasmodesmata connections.
  
• This pectin-rich layer is made up of calcium and magnesium pectates.
  
• This layer cements the cell walls of two adjacent plant cells.
  
• It is the first formed outermost layer (cell plate formed during cell division forms the middle lamella or lamellum).
• So, the correct answer is 'Calcium pectate'.