A plant hormone promotes bolting in rosette plants and is also antagonistic to the effects of abscisic acid on alpha-amylase activity. This hormone also plays a key role in apical dominance. Which of the following hormones fits this description?

Bakane’ (foolish seedling) disease of rice seedlings, was caused by

Which of the following phytohormones is used to shorten the time to seed production in young conifer trees?

Besides the Avena curvature test, which of the following can also be used to bioassay auxin?

Auxin was isolated by

The following statements are given about plant growth hormones:

I.Cytokinins suppress the synthesis of chlorophyll.

II.Auxins control apical dominance.

III.Gibberellins promote shoot elongation.

IV.Abscisic acid enabling seeds to withstand desiccation.

Which of the above statements are correct?

Synthetic auxins are used for

I. Antagonist to GA

II. Promoted bud dormancy

III. Promoted stomatal closure

IV. Promoted abscission layer

Identify the hormone/s which promote/s all these events in plants and choose the correct option

Leaf abscission, fruit fall, and bud dormancy occurs by which phytohormone?

Charles Darwin and Francis Darwin are related with

Cytokinins are mostly