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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