Plant Kingdom Lecture 6 Flashcards Preview

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Flashcards in Plant Kingdom Lecture 6 Deck (23)
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0
Q

Phylum: Rhyniophyta

Species: Cooksonia Caledonica

A
  • 2 inches to 3 inches tall
  • Silurian geological period
  • Compression fossil
  • Found in Great Britain
  • Tracheids and spores
  • Equal dichotomy
  • Sporangium at tip of each stem
1
Q

Rhyniophyta

A

Phylum

2
Q

Silurian geological period

A

Oldest period of vascular, extinct land plants

3
Q

Compression fossil

A

Fossil containing actual remains of an organism

4
Q

How can you tell that it is a sporophyte and not a gametophyte?

A

It has spores and vascular tissue

5
Q

Compression fossil in Boyden Hall Entrance

A

Fish

6
Q

Phylum: Rhyniophyta

Species: Horneophyton Lignieri

A
  • 6 inches to 12 inches tall
  • Comes from rhynie chert in Scotland
  • Petrification fossil
  • Equal dichotomous forking
7
Q

Species name: Horneophyton Lignieri

A

Genus name: Horneophyton

Specific epithet: Lignieiri

8
Q

Phylum: Rhyniophyta
Genus: Rhynia
Species: Rhynia Gwynne-Vaughnaii

A
  • 1 foot tall
  • Petrified in rhynie chert
  • Has stomatal apparatus
  • has tracheid cells, sieve cells and parenchyma cells
9
Q

Stomatal apparatus

A

Consists of 2 guard cells and 1 stoma

10
Q

Tracheid cells

A

Elongated, thick-walled conducting and supporting cells of xylem

11
Q

Phylum: Rhyniophtya
Genus: Renalia
Species: Renalia Hueberi

A
  • 10 inches tall
  • unequal and equal dichotomy
  • compression fossil (you can tell by coalified sporangia that is preserved)
  • single sporangia at the tips of the stems
12
Q

Phylum: Zosterophyllophyta
Genus: Zosterophyllum
Species: Zosterophyllum Myretonianum

A
  • 1 foot tall
  • Devonian geological period
  • Found in Great Britain
  • Compression fossil
  • Lateral sporangia (on side of stem)
  • Smooth stem
  • No surface ornamentation (i.e. no enations)
13
Q

Phylum: Zosterophyllophyta
Genus: Sawdonia
Species: Sawdonia Ornata

A
  • 1 feet to 3 feet fall
  • compression fossil
  • lateral sporangia (short stalk, have annulus, smooth –> no enations)
  • narrow stem
  • long spine-like enations on stem
  • thick walled cells in stem provide mechanical support
14
Q

Phylum: Zosterophyllophyta
Genus: Sawdonia
Species: Sawdonia acanthotheca

A
  • 2 feet to 3 feet tall
  • compression fossil
  • lateral sporangia have enations
  • broad stem
  • short spine-like enations on stem
15
Q

What is the advantage of enations?

A

They increase surface area for photosynthesis

16
Q

Phylum: Trimerophytophyta
Genus: Psilophyton
Species: Psilophyton Princeps

A
  • Compression fossil
  • Stem has vertical ribbing (individual vascular bundles)
  • Blunt, peg-like enations on stem
  • Paired, hanging sporangia on tips of the side stems
17
Q

1 vertical rod in a stem = _________

A

Xylem

18
Q

Multiple vertical rods in a stem = _________

A

Individual vascular bundles

19
Q

Phylum: Trimerophytophyta
Genus: Psilophyton
Species: Psilophyton Forbesii

A
  • Compression fossil
  • Stem has vertical ribbing
  • No enations on stem
  • Sporangia are paired, fusiform, and in clusters on the side stems
20
Q

Phylum: Trimerophytophyta
Genus: Pertica
Species: Pertica Quadriferia

A
  • 5 feet tall
  • wide stem
  • equal dichotomous forking
  • many sporangia
  • apical clusters of sporangia
21
Q

Phylum: Trimerophytophyta
Genus: Pertica
Species: Pertica Veria

A
  • 4 feet to 5 feet tall
  • unequal dichotomy in side stem
  • massive amount of sporangia
22
Q

Phylum: Trimerophytophyta
Genus: Psilophyton
Species: Psilophyton Dawsonii

A
  • Petrified fossil

- Clusters of sporangia on side stems