Question

Auxin is used by gardener to prepare weed-free lawns. But no damage is caused to grass as auxin

• A. promotes apical dominance
• B. promotes abscission of-mature leaves only
• C. does not affect mature monocotyledonous plants
• D. can help in cell division in grasses, to produce growth

Answer 1

Answer: (C)

does not affect mature monocotyledonous plants

Answer 2

Auxins are plant hormones that play a crucial role in regulating growth and development in plants. When applied in high concentrations, auxins cause abnormal growth in plants, especially dicots, leading to the death of these plants. However, monocotyledonous plants, such as grasses, are less affected by auxins. This is because monocots have a different structure and metabolic response compared to dicots, making them less susceptible to the growth-disrupting effects of auxins.

Therefore, when gardeners use auxins to eliminate weeds, the herbicide harms the dicot weeds but does not damage the monocot grass, allowing the lawn to remain unaffected.