Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
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 |
