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Seeds

Seed Worksheet

Subject: 
Biology
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Biology
Seeds
Ecology
Plant reproduction
Plant morphology
Embryology
Holt McDougal
Germination
Houghton Mifflin Harcourt
Resource
Embryo
reproduction

? SECTION 22.3 ?SEED DISPERSAL AND GERMINATION Power Notes ? ? Seeds can be spread by go through a period called 1. ? begin to grow in a process called ? 2. 4. 6. ? 3. which is beneficial because ?during which 7. ? 5. Germination 1. Embryo takes up water: 2. Embryonic root: 3. Water activates enzymes: 4. Embryonic shoot: 5. Leaves: Unit 7 Resource Book Power Notes 63 McDougal Littell Biology ? CHAPTER 22 Plant Growth, Reproduction Copyright by McDougal Littell, a division of Houghton Mifflin Company
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abio

Subject: 
Biology
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0
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Tags: 
Biology
Plant hormones
Botany
Chemistry
Plant morphology
Plant physiology
Seeds
Cytokinin
Auxin
Abscisic acid
Abscission
Gibberellin
health

39.2 Plant hormones 131095 SunHa Lee cytokinins - 2) apical dominance Apical dominance: ability of the apical bud to suppress the development of axillary buds Direct inhibition hypothesis: auxin & cytokinins act antagonistically in regulating axillary bud growth - auxin: sent from apical bud, directly inhibits axillary growth - cytokinins: sent from roots, signals axillary growth Ratio of auxin and cytokinins is important 2) apical dominance Apical bud removed: no inhibition of axillary buds, more lateral branches Auxin added: lateral bud growth repressed Overload of cytokinins: more lateral branches, bushier 3) anti-aging effects Slow aging - inhibit protein breakdown - stimulate RNA and protein synthesis - mobilize nutrients from nearby tissues
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