Which of the following is not the correctly matched pair of organism and its respective cell wall degrading enzyme?

Algae - Methylase

The correct answer is Option (2) - Algae - Methylase

Fungi - Chitinase: Correctly matched. Fungi have cell walls composed primarily of chitin, and chitinase is an enzyme that breaks down chitin.

Plant cells - Cellulase: Correctly matched. Plant cell walls are made largely of cellulose, and cellulase is an enzyme that breaks down cellulose.

Algae - Methylase: Incorrectly matched. Algal cell walls are often composed of cellulose, glycoproteins, or other polysaccharides, but methylase is not an enzyme associated with degrading these cell walls. Methylase typically refers to enzymes that add methyl groups to molecules, such as DNA methylases which modify DNA.

Bacteria - Lysozyme: Correctly matched. Bacterial cell walls contain peptidoglycan, and lysozyme is an enzyme that degrades peptidoglycan, thus breaking down bacterial cell walls.