auxin🪀🍷🌺 Flashcards

1
Q

observed the process phototropism by

A

c darwin and f darwin

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2
Q

1st observed in

A

canary grass responded to unilateral illumination

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3
Q

tip of coleoptile was the site of

A

transmittable influence ie auxin causing bending of all coleoptile

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4
Q

isolated by

A

fw went from tips o cpoleoptile of oat seed________________ 1st isolated from human urine

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5
Q

biosynthesis of auixn

A

tryptophan amino acid + zn2+ ion

at both root apex and shoot; transport of auxin is polar

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6
Q

natural auxin

A

iba- from plants

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7
Q

most widely occuring in palnts

A

iaa

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8
Q

syntheticc auxin

A

naa

2-4d

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9
Q

syntheticc auxin used in

A

agri and horticulture

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10
Q

decapicitation results in

widely applied in

A

growth of lateral buds

tea plantations, hedge making

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11
Q

mainly helps the cell in

A

cell division and elongaltion;

also controls in xylem differentiation

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12
Q

root initiation

A

promoted by iba and naaa

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13
Q

prevent premature abscission of _____ leaves

promotes abscission of ______ leaves

A

plant organs

older leaves and fruits

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14
Q

flower initiation

A

promotes flowering in pineapple and litchi

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15
Q

parthenocarpy

A

seed less fruits– by spray iaa in tomato

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16
Q

srlectiveweed killer; 2, 4-d widely
used to kill

2,4-d+2 , 4, 5-t

A

dicot weedsno monocot affectagent orangeeeee