Seeds Flashcards
seed function
mature, repened fertilized ovule
prod new gen of plants
3 primary structures of seed
seed coat, endosperm, and embryo
seed coat function
protect baby embryo and endosperm
ability to regulate when seed will sprout
where does seed coat come from
integument cells that surround the ovules
endisperm function
food supply
where does endosperm come from
central cell of female ovule that had 2 nuclei that fused together with second sperm from the male pollen grain
double ferilization
embryo
baby plant
embryo function
will consume endisperma nd give rise to cotyledons
cotyledons
embryonic leaves, first to emerge from seed
do cotyledons develop in or out of seed embryo
in
dicot cotyledons
consume endosperm
give rise to 2 cotyledons
fully formed have little to no endisperm left
monocot cotyledons
only one cotyledon produced
fully formed has lrg amt of endosperm
what does the embryo produce in dicot
2 cotyledons
epicotyl
hypocotyl
radicle
epicotyl
embryonic shoot located above cotyledons
what does epicotyl produce after germination
leaves and stems
what will epicotyl give rise to after germination
apical meristem
hypocotyl
embryonic stem below cotyledons
connects cotyledon and radicle
radicle
embryonic root
what does the radicle give rise to
the primary root of dicot
differences between monocots and dicot seeds
- dicot less endisperm
- 2 cotyledons in dicot seeds
- monocot seed still has hypocotyl, epicotyl, and radicle
- monocots have coleoptle and coleorhiza
coleoptile
outermost sheath of tissue surrounding the epicotyl
coleorhiza
outermost sheath tissue surrounding the hypocotyl and radicle that protects them during germination
