Question

Which of the following enzyme is secreted by the cell undergoing abscission?

• A. Lignase
• B. Pectinase
• C. Cellulase
• D. All of the above

Answer 1

Answer: (D)

All of the above

Abscission is a term used in several areas of biology to mean shedding of various parts of an organism. In plant sciences, it is most commonly refers to the process by which a plant drops one or more of its parts, such as leaf, fruit, flower or seed. Auxin inhibits abscission of leaves and fruits but when auxin levels in the leaf declines, the tissues becomes sensitive to ethylene that promotes abscission by producing and secreting various enzymes which includes cellulases, pectinases and lignases.

So, the correct answer is option D.