Which PGR is most likely responsible for the phenomenon observed when a plant bends towards a light source, even if the light source is unidirectional and doesn't illuminate the entire plant?

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

In the Avena curvature test, what is measured to determine auxin concentration?

Member of auxin, which is widely used to kill the dicotyledonous weed is

Rapid and dramatic increase in shoot length is called

Which plant part is used in the Avena curvature test for auxin bioassay?

Charles Darwin and Francis Darwin are related with

Kinetin, a modified form a adenine was discovered from

It takes very long time for pineapple plants to produce flowers. Which combination of hormones can be applied to artificially induce flowering in pineapple plants throughout the year to increase yield?

One hormone helps in ripening of fruits, while the other stimulates closure of stomata. These are respectively

Ethylene is commonly used to regulate flowering in pineapples. Which other plant hormone is often used in conjunction with ethylene for this purpose?