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Biol 112 > Ch 26 exam 3 > Flashcards

Ch 26 exam 3 Flashcards

1
Q

Mesozoic era importance

A

cycads and conifers dominate landscapes

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2
Q

cretaceous era importance

A

flowering plants diversify

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3
Q

Jurassic period importance

A

flowering plants appear

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4
Q

permian period importance

A

gymnosperm forests replace lycophyte and fern forests

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5
Q

carboniferous era importance

A

first gymnosperms, forests of seedless vascular plants dominate swampy lands

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6
Q

Devonian period

A

first seed plants

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7
Q

silurian period

A

first vascular plants

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8
Q

ordovician period

A

first land plants

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9
Q

sporopollenin

A

in pollen walls protects pollen grains

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10
Q

pollination

A

transfer of a pollen to a part of the see plant that contains the ovule

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11
Q

Gymnosperms characteristics

A

-‘naked seed’
-trachids
-dominant sporophyte
-heterosporous
-monecious or diecious

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12
Q

Gymnosperm phyla:

A

Coniferophyta
Cycadophyta
Gnetophyta
Ginkophyta

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13
Q

Angio sperm phyla:

A

Anthophyta

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14
Q

Coniferophyta

A

confiers - cone bearers

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15
Q

Cycadophyta

A

cycads- fern/palm like fronds
FLAGELLATED SPERM

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16
Q

Ginkgophyta

A

ginkgos
FLAGELLATED SPERM

17
Q

Gnetophyta

A

male & female strobili
tropics, deserts

18
Q

double fertilization

A

-2 SPERM NUCLEI
one fuses with egg to form zygote (2n)

19
Q

double fertilization

A

-2 SPERM NUCLEI
one fuses with egg to form zygote (2n)
one fuses with 2* central nuclei, forming endosperm (3n) food supply in seed (fruit)

20
Q

Cotyledons: monocot vs eudicot

A

monocot: one cotyledon
dicot: two

21
Q

Leaf veins: monocot vs eudicot

A

monocot: parallel
dicot: vein netlikes

22
Q

Stem: monocot vs eudicot

A

mono: tissues scattered
di: arranged in ring

23
Q

roots: monocot vs eudicot

A

mono: root system fibrous
di: taproot

24
Q

pollen: monocot vs eudicot

A

mono: pollen grains with one opening
di: pollen grains with three openings

25
Q

flowers: monocot vs eudicot

A

mono: three petals (multiples)
di: four or five petals (multiples)

26
Q

fruit formation

A

mature ovary of flower, thickens around seeds

Biol 112 (7 decks)

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