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Diversity in the plant kingdom. © 2008 Paul Billiet ODWS. Bryophyta. Small terrestrial plants restricted to damp habitats Water is needed for fertilisation Spores ensure dispersal. © 2008 Paul Billiet ODWS. www.flwildflowers.com/flwildflowers.html. Bryophyta. Hepaticae the liverworts

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diversity in the plant kingdom

Diversity in the plant kingdom

© 2008 Paul Billiet ODWS

bryophyta
Bryophyta
  • Small terrestrial plants restricted to damp habitats
  • Water is needed for fertilisation
  • Spores ensure dispersal

© 2008 Paul Billiet ODWS

bryophyta1

www.flwildflowers.com/flwildflowers.html

Bryophyta
  • Hepaticae the liverworts
  • Prostrate thallus with rhizoids

© 2008 Paul Billiet ODWS

bryophyta2
Bryophyta
  • Musci the mosses
  • Erect stem with leaflets +/- rhizoids

http://www.univ-ubs.fr/

© 2008 Paul Billiet ODWS

filicinophyta the ferns
Filicinophyta the ferns
  • Water still needed for fertilisation
  • Spores ensure dispersal
  • Vascular plants
  • Lignified tissue (wood) may be present
  • Differentiated into: leaves, stem, roots, rhizome

© 2008 Paul Billiet ODWS

filicinophyta

procosara.org/san_rafael_en,photo,64?PHPSESSI...

www.rook.org/earl/bwca/nature/ferns/index.html

Filicinophyta
coniferophyta the conifers
Coniferophyta the conifers
  • Vascular plants
  • Seed plants
  • Seeds contain a food store for an embryo inside protective coat
  • Seeds ensure dispersal
  • Naked seeds born in cones

http://www.nasa.gov/centers/goddard/news/topstory/2006/forest_changes_prt.htm

© 2008 Paul Billiet ODWS

coniferophyta

http://www.nearctica.com/trees/conifer/places/eastern.htm

Coniferophyta

Araucaria sp. (Monkey-puzzle)

http://www.britannica.com/ebc/art-21824/Monkey-puzzle-tree

angiospermophyta the flowering plants
Angiospermophytathe flowering plants
  • Vascular plants
  • Seed plants
  • Seeds protected by an ovary which becomes a fruit
  • Fruit, a structure that encourages seed dispersal

© 2008 Paul Billiet ODWS

summary
Summary

© 2008 Paul Billiet ODWS

dicotyledons monocotyledons
Dicotyledons & Monocotyledons
  • Angiosperms are divided into two groups
  • The basic distinguishing feature are embryonic leaves (coytledons)
  • Cotyledons are found in the seeds of these plants

© 2008 Paul Billiet ODWS

dicotyledon seed

Seed coat or testa

Cotyledons

acting as a food reserve

Plumule

(to become the first true leaf)

Micropyle

Radicle

(to become the first root)

Dicotyledon seed

© 2008 Paul Billiet ODWS

monocotyledon seed

Seed coat

Endosperm

(food reserve)

Cotyledon

Plumule

Radicle

Monocotyledon seed

© 2008 Paul Billiet ODWS

dicots v monocots other differences1

Vascular tissue

Vascular tissue

Cortex

Pith

Epidermis

Dicots v Monocots – other differences

© 2008 Paul Billiet ODWS