Growth Regulators

Plant Growth|The Discovery of Plant Growth Regulators|Physiological Effects of Plant Growth Regulators Auxins|Physiological Effects of Plant Growth Regulators Gibberellins|Physiological Effects of Plant Growth Regulators Cytokinins|Physiological Effects o

Characteristics Of Plant Growth Regulator

Assertion :- Growth regulators are intrinsic and intercellular factors which controls development of plant. Reason:- Growth regulators are produced by plant cell itself and work in cells other than those in which they synthesise.

Match the columus and choose the correct combination {:("Growth Regulator"," Action"),("(a) Abscisic aicd","(1) Delays leaf abscission"),("(b) Ethylene","(2) Inhibits seed "),(," germination"),("(c) Cytokinin","(3) Herbicide"),("(d) Auxin","(4) Hastens fruit ripening"):}

Which one of the plant growth regulators would you use if you are asked to: (a) Induce rooting in a twig (b) Quickly ripen a fruit (c) Delay leaf senescence (d) Induce growth in axillary buds (e) ‘Bolt’ a rosette plant (f) Induce immediate stomatal closure in leaves.

How many of the following statements are not correct? [I] In a flowering plant the substances that would need to be transported are water, mineral nutrients, organic nutrients and plant growth regulators. [II] Over small distances, substances move by diffusion and by cytoplasmic streaming supplemented only by passive transport. [III] Organic and mineral nutrients undergo multidirectional transport through the xylem. [IV] From the storage organs, organic compounds are later re-exported. [V] Phytohormones and other chemical signals are transported to maintain and regulate the plant functions.

Which of the following set is not natural plant growth regulator

Identify the incorrect statement about ABA growth regulator

A natural growth regulator is