Turf ID BONOS Flashcards
(22 cards)
What is a seed?
Sexual reproductive propagule of an angiosperm
Grasses are angiospersm and thus produce?
Flowers
What is a floret?
a grass flower
Florets become what after pollination?
the seed
what is Caryopsis?
dry, swelling, one seeded fruit “seed”
What is a modified leaf?
bract
Lowermost (outer) of the two bracts
Lemma
Uppermost (inner) of the two bracts
Palea
In what grass can the lemma and palae be separated by threshing?
bermudagrass
New plants form where?
Embryo
Seed coat
outer protective layer of the seed
Pericarp
the fruit wall developed from the ovary wall
Aleurone
thin; proteinacous layer; plays important role in germination
Endosperm
food supply
Scutellum
single colydon of grass, serves to absorb nutrients from the endosperm
Coleoptile
protective sheath of the embryonic shoot
Shoot Apex
meristem where new shoots arise from
Radicle
very first primary root to emerge from seed
Coleorhiza
sheath that helps protect radicle
plumule
the first leaf
Primary roots eventually?
Die, and only the adventagous roots remain
Planting depth
if planted too deep, the plant runs out of food before it becomes photosynthetic
