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Bio108 Physio > hormones > Flashcards

hormones Flashcards

1
Q

regulate plant functions

A

plant hormones

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2
Q

-are chemical messengers
-produced in one part of an organism
-stimulates or surpresses activity in another part
-mobile signals of living organisms

A

hormones

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3
Q

induce growth of shoot

A

cytokinin

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4
Q

promote root initiation

A

auxin

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5
Q

stimulate cell elongation

A

gibberellin

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6
Q

trigger blossoming

A

florigen

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7
Q

the production of hormones occurs very often at sites of _______________ before cells have fully differentiated

A

active growth within the meristems

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8
Q

-appear to be ubiquitous, they are present in all higher plants

A

plant hormones

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9
Q

plant growth regulators (3)

A

auxins
gibberelljns
cytokinins

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10
Q

plant growth inhibitors (2)

A

abscisic acid
ethylene

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11
Q

-are plant hormones that produce dramatic increases in size
-ending seed dormancy

A

gibberellins

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12
Q

gibberellins stimulates (3)

A

stem elongation
germination
flowering

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13
Q

-causes the ripening of fruits

A

ethylene

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14
Q

-stimulate cytokinesis
-final stage in cell division
-produced in growing roots, seeds and fruits
-involved in growth of side branches

A

cytokinins

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15
Q

key concept of cytokinins

A

cytokinins= more mitosis
more mitosis= more cells
more cells= plant growth

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16
Q

-lengthen plant cells in the growing tip
-controls some forms of tropism

A

auxins

17
Q

auxin stimulates (1)

A

growth of primary stem

18
Q

-is the movement of plant in response to an environmental stimulus

A

tropism

19
Q
  • essential for proper growth and development of plants
A

spatio-temporal action of hormones

20
Q

-a plant hormone and is involved in plant defense mechanisms

A

jasmonic acid

21
Q

-a defense-boosting hormone as its level increases with pest attack

A

salicyclic acid

22
Q

-regulate specific gene sets to help plamts sustain during unfavorable environmental conditions

A

brassinosteroids

Bio108 Physio (3 decks)

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