Plant Growth Regulators — Prelims Questions

Which of the following plant growth regulators is a gaseous hormone and is primarily involved in fruit ripening?

Which of the following pairs of plant hormones are antagonistic in their effects on seed dormancy?

Which of the following is a synthetic auxin used as a herbicide to kill dicotyledonous weeds?

Which of the following plant hormones is responsible for delaying senescence in leaves and promoting lateral bud growth?

Which of the following is NOT a physiological effect of Gibberellins?

The 'triple response' observed in dicot seedlings to mechanical stress is mediated by which plant hormone?