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Seed Plants Flashcards

1
Q

Cambiums

A

or lateral meristems, adds thickness to a plants body

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2
Q

Cambiums

A

or lateral meristems, adds thickness to a plants body

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3
Q

Cambiums

A

or lateral meristems, adds thickness to a plants body

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4
Q

bifacial Cambium

A

two faced

  1. cambium produces cells to the inside and outside
  2. inside = secondary sylem aka wood (conducts water)
  3. outside = secondary phloem (conducts food)
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5
Q

Progymnosperms

A

extint relatives of seed plants (didn’t produce seeds)

Homosporous and heterosporous forms

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6
Q

Lignophyte trends in evolution

A
  1. prosteles - homosporous, simple leaf-like structures, free sporing
  2. eusteles, heterosporous, simple leaves, free sporing
  3. eusteles, heterousporous, various leaf forms, seeds
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7
Q

Progymnosperms

A
  1. Archaeopteris
  2. heterosporous but didnt produce seeds
  3. branching systems looked similar to fern fronds
  4. eustele
  5. the stem produced wood
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8
Q

Seed Plants

A

Include:

  1. angiosperms (flower plants)
  2. gymnosperms (no flowers)

*** gymnosperms evolved first

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9
Q

Gymnosperms

A
  1. “naked seed” plants
  2. seeds are not enclosed in an ovary (fruit)
  3. no flowers ( reproductive structures usually cones)
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10
Q

Four living gymnosperm groups

A
  1. conifers
  2. cycads
  3. ginkgo
  4. gnetophytes
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11
Q

Extint diversity

A

Pteriodsperms
Cycadeoids or Bennettiatales
Cordaites

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12
Q

Pteridosperms

A

seed ferns ( seed plants with fern-like leaves)

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13
Q

Cycadeoids

A

cycad-like forms (probs not related to cycads)

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14
Q

Cordaites

A

ancestors to conifers

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15
Q

What is a seed?

A

Mature ovule with embryo

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16
Q

Pollen grain

A

microgametophyte that develops in the microspore wall

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17
Q

Pollination

A

Pollen transferred to the ovule

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18
Q

If sperm not flagellated

A

delivered to the egg by a pollen tube

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19
Q

in gymnosperms with flagellated sperm

A

the pollen tube is haustorial

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20
Q

Haustorial

A

grows into and absorbs nutrients from nucellus of ovule

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21
Q

bifacial Cambium

A

two faced

  1. cambium produces cells to the inside and outside
  2. inside = secondary sylem aka wood (conducts water)
  3. outside = secondary phloem (conducts food)
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1
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22
Q

Progymnosperms

A

extint relatives of seed plants (didn’t produce seeds)

Homosporous and heterosporous forms

23
Q

Lignophyte trends in evolution

A
  1. prosteles - homosporous, simple leaf-like structures, free sporing
  2. eusteles, heterosporous, simple leaves, free sporing
  3. eusteles, heterousporous, various leaf forms, seeds
24
Q

Progymnosperms

A
  1. Archaeopteris
  2. heterosporous but didnt produce seeds
  3. branching systems looked similar to fern fronds
  4. eustele
  5. the stem produced wood
25
Seed Plants
Include: 1. angiosperms (flower plants) 2. gymnosperms (no flowers) *** gymnosperms evolved first
26
Gymnosperms
1. "naked seed" plants 2. seeds are not enclosed in an ovary (fruit) 3. no flowers ( reproductive structures usually cones)
27
Four living gymnosperm groups
1. conifers 2. cycads 3. ginkgo 4. gnetophytes
28
Extint diversity
Pteriodsperms Cycadeoids or Bennettiatales Cordaites
29
Pteridosperms
seed ferns ( seed plants with fern-like leaves)
30
Cycadeoids
cycad-like forms (probs not related to cycads)
31
Cordaites
ancestors to conifers
32
What is a seed?
Mature ovule with embryo
33
Pollen grain
microgametophyte that develops in the microspore wall
34
Pollination
Pollen transferred to the ovule
35
If sperm not flagellated
delivered to the egg by a pollen tube
36
in gymnosperms with flagellated sperm
the pollen tube is haustorial
37
Haustorial
grows into and absorbs nutrients from nucellus of ovule
38
bifacial Cambium
two faced 1. cambium produces cells to the inside and outside 2. inside = secondary sylem aka wood (conducts water) 3. outside = secondary phloem (conducts food)
39
Progymnosperms
extint relatives of seed plants (didn't produce seeds) | Homosporous and heterosporous forms
40
Lignophyte trends in evolution
1. prosteles - homosporous, simple leaf-like structures, free sporing 2. eusteles, heterosporous, simple leaves, free sporing 3. eusteles, heterousporous, various leaf forms, seeds
41
Progymnosperms
1. Archaeopteris 2. heterosporous but didnt produce seeds 3. branching systems looked similar to fern fronds 4. eustele 5. the stem produced wood
42
Seed Plants
Include: 1. angiosperms (flower plants) 2. gymnosperms (no flowers) *** gymnosperms evolved first
43
Gymnosperms
1. "naked seed" plants 2. seeds are not enclosed in an ovary (fruit) 3. no flowers ( reproductive structures usually cones)
44
Four living gymnosperm groups
1. conifers 2. cycads 3. ginkgo 4. gnetophytes
45
Extint diversity
Pteriodsperms Cycadeoids or Bennettiatales Cordaites
46
Pteridosperms
seed ferns ( seed plants with fern-like leaves)
47
Cycadeoids
cycad-like forms (probs not related to cycads)
48
Cordaites
ancestors to conifers
49
What is a seed?
Mature ovule with embryo
50
Pollen grain
microgametophyte that develops in the microspore wall
51
Pollination
Pollen transferred to the ovule
52
If sperm not flagellated
delivered to the egg by a pollen tube
53
in gymnosperms with flagellated sperm
the pollen tube is haustorial
54
Haustorial
grows into and absorbs nutrients from nucellus of ovule

PBIO (14 decks)

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