Land Plants fall into two major groups Non vascular Vascular.

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Transcript of Land Plants fall into two major groups Non vascular Vascular.

Page 1: Land Plants fall into two major groups Non vascular Vascular.
Page 2: Land Plants fall into two major groups Non vascular Vascular.

Land Plants fall into two major groups

• Non vascular • Vascular

Page 3: Land Plants fall into two major groups Non vascular Vascular.

Non-Vascular Plants

• Lack vascular tissue

• Very small• Known as the

bryophytes

Page 4: Land Plants fall into two major groups Non vascular Vascular.

The Bryophytes

Liverworts

Hornworts

Mosses

Page 5: Land Plants fall into two major groups Non vascular Vascular.

Mosses

• True mosses

• Sphagnum (Peat) mosses

• Granite mosses

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True Mosses

• Consists of structures resembling leaves stems and roots

Page 7: Land Plants fall into two major groups Non vascular Vascular.

True Mosses

• “Leaves” have no veins

• “Stems” have no vascular tissue

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True Mosses

• Reproduces by spores

• Produced in a capsule

Page 9: Land Plants fall into two major groups Non vascular Vascular.

True Mosses – The Sporophyte

• When operculum is shed peristome teeth are exposed

• Peristome regulates spore dispersal

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Mosses

• True mosses

• Sphagnum (Peat) mosses

• Granite mosses

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Sphagnum (Peat) Mosses

• Grow in Bogs• Bogs may cover

huge areas

• Moss absorbs water• Water is acidified by

the moss

Page 12: Land Plants fall into two major groups Non vascular Vascular.

Sphagnum (Peat) Mosses

• Unique leaf structure allows leaves to absorb large quantities of water

• Moss absorbs water• Water is acidified by

the moss

Page 13: Land Plants fall into two major groups Non vascular Vascular.

Sphagnum (Peat) Mosses

• Unique leaf structure allows leaves to absorb large quantities of water

• Moss absorbs water• Water is acidified by

the moss

Page 14: Land Plants fall into two major groups Non vascular Vascular.

Sphagnum (Peat) Mosses

• Thick deposits of partially decomposed moss accumulates

• Deposits are known at Peat

Page 15: Land Plants fall into two major groups Non vascular Vascular.

Sphagnum and Peat are Harvested for Agriculture and Fuel

Page 16: Land Plants fall into two major groups Non vascular Vascular.

Acid pH and capacity for water retention make sphagnum a popular soil amendment

Page 17: Land Plants fall into two major groups Non vascular Vascular.

Sphagnum (Peat) Mosses

• Peat has been harvest for centuries and burned for fuel

Page 18: Land Plants fall into two major groups Non vascular Vascular.

Bodies buried in Sphagnum Bogs are well preserved

• Acid/anoxic environment retards bacterial growth

Short video Mummies Frozen in Time

Page 19: Land Plants fall into two major groups Non vascular Vascular.
Page 20: Land Plants fall into two major groups Non vascular Vascular.

Land Plants fall into two major groups

• Non vascular • Vascular

Page 21: Land Plants fall into two major groups Non vascular Vascular.

Vascular Plants

• Vascular tissue • Some are

seedless• Others produce

seeds

Page 22: Land Plants fall into two major groups Non vascular Vascular.

Seedless Vascular Plants

Whisk FernsClub/Spike Mosses

Horsetails

Ferns

Page 23: Land Plants fall into two major groups Non vascular Vascular.

Whisk Ferns

Page 24: Land Plants fall into two major groups Non vascular Vascular.

Whisk Ferns

• Dichotomous branching stems

Page 25: Land Plants fall into two major groups Non vascular Vascular.

Whisk Ferns

• No roots – underground rhizome only

Page 26: Land Plants fall into two major groups Non vascular Vascular.

Whisk Ferns

• No leaves- stem appendages are called enations

Page 27: Land Plants fall into two major groups Non vascular Vascular.

Whisk Ferns

• Sporangia attached laterally on stem

Page 28: Land Plants fall into two major groups Non vascular Vascular.
Page 29: Land Plants fall into two major groups Non vascular Vascular.

Seedless Vascular Plants

Whisk FernsClub/Spike Mosses

Horsetails

Ferns

Page 30: Land Plants fall into two major groups Non vascular Vascular.

Plants with leaves have either microphylls or megaphylls

• Microphylls have a single vascular strand

• Megaphylls have a network of vascular strands

Page 31: Land Plants fall into two major groups Non vascular Vascular.

Club and Spike Mosses

• Stems, roots and leaves

• Leaves are microphylls

Page 32: Land Plants fall into two major groups Non vascular Vascular.

Club and Spike Mosses

• Sporangia produced in axils of leaves

Page 33: Land Plants fall into two major groups Non vascular Vascular.

Club and Spike Mosses

• Sporangia produced in axils of leaves

Page 34: Land Plants fall into two major groups Non vascular Vascular.
Page 35: Land Plants fall into two major groups Non vascular Vascular.

Seedless Vascular Plants

Whisk FernsClub/Spike Mosses

Horsetails

Ferns

Page 36: Land Plants fall into two major groups Non vascular Vascular.

Horsetails and Scouring Rushes

Page 37: Land Plants fall into two major groups Non vascular Vascular.

Horsetails and Scouring Rushes

• Stems jointed• Branches whorled

around stem

Page 38: Land Plants fall into two major groups Non vascular Vascular.

Horsetails and Scouring Rushes

• Stems ribbed• Silica in cells of the

epidermis

Page 39: Land Plants fall into two major groups Non vascular Vascular.

Horsetails and Scouring Rushes

• Leaves small • Reduced megaphylls• Whorled at nodes• Underground rhizome with Roots

Page 40: Land Plants fall into two major groups Non vascular Vascular.

Horsetails and Scouring Rushes

• Spores produced in terminal strobilous

Page 41: Land Plants fall into two major groups Non vascular Vascular.
Page 42: Land Plants fall into two major groups Non vascular Vascular.

Seedless Vascular Plants

Whisk FernsClub/Spike Mosses

Horsetails

Ferns

Page 43: Land Plants fall into two major groups Non vascular Vascular.

Ferns

Page 44: Land Plants fall into two major groups Non vascular Vascular.

Ferns show great diversity

of form

Page 45: Land Plants fall into two major groups Non vascular Vascular.

Ferns have megaphylls

Page 46: Land Plants fall into two major groups Non vascular Vascular.

Young fern megaphylls are

called fiddleheads

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Fern stems grow vertically or horizontally

Page 48: Land Plants fall into two major groups Non vascular Vascular.

Spores are produced on underside of megaphylls

Page 49: Land Plants fall into two major groups Non vascular Vascular.

Spores are produced in clusters called Sori

Page 50: Land Plants fall into two major groups Non vascular Vascular.

Sori of many ferns are covered by an indusium

Page 51: Land Plants fall into two major groups Non vascular Vascular.

Sori of many ferns are covered by an indusium

Page 52: Land Plants fall into two major groups Non vascular Vascular.

Seedless Vascular Plants

PLANT ROOTS STEMS LEAVES SPORANGIA

Whisk Ferns None Dichotomous branching

None Lateral

Club/Spike Mosses

Yes Yes Microphyll Axil of microphyll

Horsetails Yes Ribbed and Jointed

Reduced megaphyll

Terminal strobilous

Ferns Yes Vertical or horizontal

Megaphyll Underside of megaphyll


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