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4 Cards in this Set

  • Front
  • Back
What composes
 Embryo – from sperm & egg meeting
 Embryogenesis
 Endosperm – stored carbohydrates
 Seed coat - protection
Endosperm
 Stored carbohydrates
 Vary in amount by species
 Sometimes absorbed by cotyledons
Seed Coat
 Protection
 Very hard
 Fairly impermeable to water
 Thickness varies with species
 Hilum
Germination
•Emergence of embryo from seed coat
•Requirements for most...
•Water : Re-hydration
•Oxygen : Respiration
•Not Carbon Dioxide?! Temperature : 25-30°C
•Light / Darkness
•Not soil?!
• Scarification
• Fire
• Leeching