Question

Choose the wrongly matched pair from the following.

• A. Auxins - to grow
• B. Gibberellins - Gibberella fujikuroi
• C. Cytokinins - herring sperm DNA
• D. Abscissic acid - flowering hormone

Answer 1

The correct option is D Abscissic acid - flowering hormone

Abscisic acid is a plant hormone which causes abscision. It never promotes flowering in plants. ABA owes its name to its role in the abscission of plant leaves. In preparation for winter, ABA is produced in terminal buds. This slows plant growth and directs leaf primordia to develop scales to protect the dormant buds during the cold season. ABA also inhibits the division of cells in the vascular cambium, adjusting to cold conditions in the winter by suspending primary and secondary growth. It also promotes dormancy in buds.