The problem of necrosis and gradual senescence, while performing tissue culture can be overcome 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?

The rapid elongation of internodes and petioles in deep-water rice is an example of:

The naturally produced auxin is

Plant hormones which show the antagonist effects to auxin w.r.t. apical dominance is

Fruit and leaf drop at early stages can be prevented by the application of

Difference between kinetin and zeatin is

The naturally produced auxin is

Which of the following plant growth responses is utilized in the Avena curvature test?

Which hormone is called the dormancy hormone?

I. More female flowers in cucumber

II. α-amylase production is barley grain

III. Acceleration of fruit ripening in tomato

IV. Delayed in sprouting in potato tubers

From the given effects find, out the effects of ethylene and choose the correct option accordingly