Plant Hormones — Prelims Questions

Which of the following plant hormones is a gaseous substance and is primarily associated with fruit ripening and senescence?

Consider the following statements regarding plant hormones: 1. Auxins are responsible for apical dominance and are used in tissue culture for root initiation. 2. Gibberellins are primarily involved in cell division and delaying senescence. 3. Abscisic Acid (ABA) is known as the stress hormone and promotes stomatal closure during drought. 4. Ethylene is a growth inhibitor and plays a role in breaking seed dormancy. Which of the statements given above are correct?

In the context of agricultural practices, the application of which plant hormone is commonly used to increase the size of grapes and to accelerate the malting process in barley?

Which of the following statements correctly describes the role of cytokinins in plant development?

Consider the following applications of plant growth regulators: 1. Inducing rooting in stem cuttings. 2. Selective killing of broadleaf weeds in cereal crops. 3. Promoting parthenocarpy (seedless fruit development). Which of the above applications are associated with Auxins?