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level: Level 1

Questions and Answers List

level questions: Level 1

QuestionAnswer
which of the following hormone induces cell divisioncytokinin
which is a weedicide ?2,4-D
a plant cell has potential to develop into a full plant. this is calledtotipotency
the plant hormone controlling fruit ripening isethylene
induction of cell division and delay in senescence is done bycytokinins
curling of tendrils is due tothigmotrophism
bud dormacy can be inuced byABA
avena curvature test is a bioassay for examining the activity ofauxins
induction of cell division and delay is senescence is one bycytokinins
gibberellins can promote seed germination because of their influence onprouction of hyrolyzing enzymes
senescence as an actie developmental cellular process in the growth and functioning of a flowering plant,is indicated inleaf abscission
movement of leaves of mimosa pudica are due toseismonasty
thigmotropic movement is best shown bymovement in tendrils
phytohormones areregulators synthesided by plants and influencing physiological processes
fruit and leaf drop at an early age can be prevented by the application ofauxins
what is a stress hormone/ produced during extreme conditionsabscisic acid
auxetic growth isincrease in cell volume only
a chemical believed to be involved in flowering isflorigen
a plant hormone used for inducing morphogenesis in plant tissue culture iscytokinins
which combination of gases is suitable for fruit ripening80 per cent C2H4 and 20 per cent CO2
ABA is involved inincreased cell division
which hormone prevents falling of fruitsNAA
hormone responsible for senescenceABA
dwarfness can be controlled by treating plant withgibberellic acid
seed dormancy is due to theabscisic acid
plants deficient of element zinc, show its effect on the biosynthesis of plant growth hormoneauxin
differentitation of shoot is controlled byhigh cytokinin: auxin ratio
cell elongation in the internodal region of the green plants takes place due togibberellins
the pigment that absorbs red and far red light in plants isphytochrome
which one is a long day plantspinach
proteinaceous pigments which control activities concenred with lightphytochrome
the method that renders the seed coat permeable to water so that embryo expansion is not physically retarded isscarification
the response of different organisms to environmental rhythms of light and darkness is calledphotoperiodism
what will be the effect on phytochrome in a plant subjected to continous red lightlevel of phytochrome decreases
in short day plants, flowering is induced byphotoperiod below a critical length and uninterrupted long night
flowering dependent on cold treatment isvernalisation
which one increases in the absence of lightelongation of internodes
which one of the following can replace vernalisationgibberellins
phytochrome is involved inphotoperiodism
treatment of seed at low temperature under moist condition to break its dormancy is calledstratification
vernalization stimulates flowering incarrot
leaf fall can be prevented with the help ofcytokinins
abscisic acid controlsleaf fall and dormancy
hormone primarily concerned with cell division iscytokinin/zeatin
abscisic acid causesstomatal closure
the hormone responsible for apical dominance isIAA
cytokininshelps retain chlorophyll
the regulator which retards ageing /senescence of plant parts iscytokinins
auxin can be bioassayed byavena coleoptile curvature
an enzyme that can stimulate germination of barley seeds isalpha-amylase
foolish seedling disease of rice lead to the discovery ofGA
abscissic acidstomatal closure
which acid is a derivative of carotenoidsabscisic acid
one of the synthetic auxin isNAA
acts as an antagonist to gibberlinsABA
the pineapple whhich under natural conditions is difficult to blossom has been made to produce fruits throughout the year of application ofNAA, 2,4-D
during seed germination its stored food is mobilizedgibberlins
a few normal seedlings of tamato were kept in a dark room. after a few days they were found to have become white coloured like albinos. which term is used to describe themetiolated
DR F. Went noted that if coleoptile tips were removed and placed on agar for an hour, the agar would produce a bending when placed on one side of freshly cut coleoptile stumps. significance isit demonstrates polar movement of auxins