Turf ID BONOS Flashcards

1
Q

What is a seed?

A

Sexual reproductive propagule of an angiosperm

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2
Q

Grasses are angiospersm and thus produce?

A

Flowers

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3
Q

What is a floret?

A

a grass flower

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4
Q

Florets become what after pollination?

A

the seed

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5
Q

what is Caryopsis?

A

dry, swelling, one seeded fruit “seed”

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6
Q

What is a modified leaf?

A

bract

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7
Q

Lowermost (outer) of the two bracts

A

Lemma

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8
Q

Uppermost (inner) of the two bracts

A

Palea

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9
Q

In what grass can the lemma and palae be separated by threshing?

A

bermudagrass

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10
Q

New plants form where?

A

Embryo

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11
Q

Seed coat

A

outer protective layer of the seed

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12
Q

Pericarp

A

the fruit wall developed from the ovary wall

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13
Q

Aleurone

A

thin; proteinacous layer; plays important role in germination

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14
Q

Endosperm

A

food supply

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15
Q

Scutellum

A

single colydon of grass, serves to absorb nutrients from the endosperm

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16
Q

Coleoptile

A

protective sheath of the embryonic shoot

17
Q

Shoot Apex

A

meristem where new shoots arise from

18
Q

Radicle

A

very first primary root to emerge from seed

19
Q

Coleorhiza

A

sheath that helps protect radicle

20
Q

plumule

A

the first leaf

21
Q

Primary roots eventually?

A

Die, and only the adventagous roots remain

22
Q

Planting depth

A

if planted too deep, the plant runs out of food before it becomes photosynthetic