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;
15 Cards in this Set
- Front
- Back
|
what are seeds?
|
ripened ovules
|
|
|
what is the function of the seed coat?
|
protection, regulates dormancy
|
|
|
what is the function of the embryo?
|
new generation
|
|
|
what is the function of the endosperm?
|
food
|
|
|
what is the seed coat formed from?
|
integuments
|
|
|
what are integuments?
|
the outer layers of the ovule which harden to become the seed coat
|
|
|
what are the stages of embryo development?
|
globular, heart, torpedo
|
|
|
what is needed for seed germination?
|
water
|
|
|
what 2 types of seed dormancy are there?
|
mechanical and chemical
|
|
|
what is scarification?
|
To slit or soften the outer coat of (seeds) in order to speed germination.
|
|
|
what is stratification?
|
the placing of seeds in damp sand or sawdust or peat moss in ordere to preserve them or promote germination
|
|
|
what is the potion of the embryonic "stem" that is located OVER the cotyledon?
|
epicotyl
|
|
|
what is the potion of the embryonic "Stem" located BELOW the cotyledon and ABOVE the radicle?
|
hypocotyl
|
|
|
what is the protective sheath enclosing the shoot tip and embryonic leaves of grasses?
|
coleoptile
|
|
|
what is the protective sheath enclosing the embryonic root of grasses?
|
coleorhiza
|
