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pbio > Seed Plants > Flashcards

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)
How well did you know this?
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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
Q

Seed Plants

A

Include:

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

*** gymnosperms evolved first

26
Q

Gymnosperms

A
  1. “naked seed” plants
  2. seeds are not enclosed in an ovary (fruit)
  3. no flowers ( reproductive structures usually cones)
27
Q

Four living gymnosperm groups

A
  1. conifers
  2. cycads
  3. ginkgo
  4. gnetophytes
28
Q

Extint diversity

A

Pteriodsperms
Cycadeoids or Bennettiatales
Cordaites

29
Q

Pteridosperms

A

seed ferns ( seed plants with fern-like leaves)

30
Q

Cycadeoids

A

cycad-like forms (probs not related to cycads)

31
Q

Cordaites

A

ancestors to conifers

32
Q

What is a seed?

A

Mature ovule with embryo

33
Q

Pollen grain

A

microgametophyte that develops in the microspore wall

34
Q

Pollination

A

Pollen transferred to the ovule

35
Q

If sperm not flagellated

A

delivered to the egg by a pollen tube

36
Q

in gymnosperms with flagellated sperm

A

the pollen tube is haustorial

37
Q

Haustorial

A

grows into and absorbs nutrients from nucellus of ovule

38
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)
39
Q

Progymnosperms

A

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

Homosporous and heterosporous forms

40
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
41
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
42
Q

Seed Plants

A

Include:

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

*** gymnosperms evolved first

43
Q

Gymnosperms

A
  1. “naked seed” plants
  2. seeds are not enclosed in an ovary (fruit)
  3. no flowers ( reproductive structures usually cones)
44
Q

Four living gymnosperm groups

A
  1. conifers
  2. cycads
  3. ginkgo
  4. gnetophytes
45
Q

Extint diversity

A

Pteriodsperms
Cycadeoids or Bennettiatales
Cordaites

46
Q

Pteridosperms

A

seed ferns ( seed plants with fern-like leaves)

47
Q

Cycadeoids

A

cycad-like forms (probs not related to cycads)

48
Q

Cordaites

A

ancestors to conifers

49
Q

What is a seed?

A

Mature ovule with embryo

50
Q

Pollen grain

A

microgametophyte that develops in the microspore wall

51
Q

Pollination

A

Pollen transferred to the ovule

52
Q

If sperm not flagellated

A

delivered to the egg by a pollen tube

53
Q

in gymnosperms with flagellated sperm

A

the pollen tube is haustorial

54
Q

Haustorial

A

grows into and absorbs nutrients from nucellus of ovule

pbio (14 decks)

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