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?

Pick out the correct statements.

i. Cytokinins especially help in delaying senescence.

ii. Auxins are involved in regulating apical dominance.

iii. Ethylene is especially useful in enhancing seed germination.

iv. Gibberellins are responsible for immature falling of leaves.

Which plant hormone is commonly used to prevent the early abscission of fruits and leaves?

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

The shedding of leaves, flowers or fruits due to change in the hormonal balance in plants, is referred as

Which gaseous phytohormone is involved in abscission of leaves and flowers?

Ethephon

Abscission and dormancy are caused by

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

Senescence as an active developmental cellular process in the growth and functioning of a flowering plant, is indicated in

I. Leaf abscission is …A… by auxin in younger leaves and fruits

II. Apical dominance is …B… by auxin

Complete the given statement by choosing appropriate options for the given blanks