Primary precursor of l.A.A is:
The biological activity of l.A.A is tested by :-
Indole, 3 acetic acid, called as auxin was first isolated from :-
Stem elongation is affected by :—
Apical dominance means :-
Auxin inhibits the growth of -
Which of thefollowing is not a natural occuring plant hormone ?
Leaf fall occurs when the content of 5
Auxanometer is meant for measuring -
Auxin is mainly produced by -
In plants growth is-
Growth is primarily affected by two climatic factors, which factors?
13. In a growing plant, the first phase during the process of growth is-
The natural plant hormones were first from
Plants bend toward the light because
If the tip of a seedling is cut off growth as wellas bending ceases because it hampers
Growth hormone acts
The movement of auxin is largely
Which growth hormone is responsible for apical dominance?
2,4 - D isa synthetic
Which of the following induces femaleness in plants ?
Agent orange is-
Richmond - Lang effect is due to-
A hypothetical Chemical belived to be involved in flowering is :-
Photoperiodic stimulus is picked up by :
Which of the following plant hormone substitutes for long photoperiod in flowering plant ?
lnternodal elongation is stimulated by :-
Cytokinin-
Bolting hormone is --
Gibberellins are -
Gibberellins do not cause -
Gibberellins can promote seed germination because
Which of the following is a coconut milk factor?
In germinating seeds Amylase, Proteases, Lipases are stimulated by
Richmond lang effect due to cytokininspertains to
Which of the following is a gaseous plant hormone
Pomalin is sprayed over apple to increase fruit size, it is
Apical dominance can be overcome by application
The maximum growth rate occurs in-
Dormancy of seed is broken by
In tissue culture, differentiation of shoot is controlled by
Pine apple can made to flower in offseasonby the application
Among the following which helps in early ripening of fruits
Abscisic acid induces-
In Autumn leaf fall occurs, because
Which of the following is a growth inhibitor-
Abscisic acid treatment results in-
Natural cell division inducing factor occurs in-
Seeds of Tomato do not germinate in its pulp due to-
What is Stress hormone?
Seed dormancy is due to the
Hormone responsible to induce senescence-
One set of a plant ‘was grown at 12 hrs. day and 12 hours night period cycles and it flowered. While in the other set night phase was interrupted by flash of light andit did not flower. Under which one of the following categories will you place this plant-
Long day plant's produces flowers when they exposed to :
Which of the following is a hypothetical hormone?
Which plant is LDP?
Wheat and henbane are?
In short day plants (SDP)flowering is induced by
59. Which is not a plant hormone-
Which pigment absorbs the red and far red light?
Cell elongation in ipternodel regions of the green plants takes place due to
Prunningof plants promotes blanching, because the auxillary buds get sensitized to