Question

The Middle lamella is mainly composed of

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

Answer 1

Answer:

C. Calcium pectate

• The middle lamella of plant cells is mainly composed of calcium pectate, a type of pectin made up of galacturonic acid residues.

• Calcium ions bound to the pectin molecules are crucial for their adhesive properties, allowing them to stick to adjacent cells and help maintain the plant tissue’s integrity.

• Hemicellulose, muramic acid, and phosphoglycerides are not typically found in the middle lamella.

• Thus, calcium pectate plays an integral part in keeping plant cells united.