si session topic 16 seedless vascular plants spring 2010 for dr. hughey’s bio 3 class picture from...
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SI SessionSI Session
Topic 16Topic 16
Seedless Vascular Plants
Spring 2010
For Dr. Hughey’s Bio 3 Class Picture from http://soapbox.lafayette.edu/node/4406
Designed by Pyeongsug Kim ©2010 [email protected]
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__________ : small leaves that contain a single strand of vascular tissue.__________ : large leaves that contain multiple strands of vascular tissue.
Microphylls
Megaphylls
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Phylum ______________
Genus ______________Lycopodium
Lycopodiophyta
Strobili
Roots
Rhizome
Microphylls
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Phylum ______________
Genus ______________Selaginella
Lycopodiophyta
Stem
Microphylls
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Vascular Plant Terminology #3
• Sporophyll- a modified leaf that bears sporangia.– Sporangium- a structure that produces spores.
From the Dr. Hughey’s Bio3 class slideDesigned by Pyeongsug Kim, ©2010 www.science-i.com
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Strobilus
Sporangia
Phylum ______________
Genus ______________Selaginella
________- a reproductive structure consisting of nonphotosynthetic sporophylls; a cone.
Lycopodiophyta
Sporophylls
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Phylum ______________
Genus ______________Isoetes
Lycopodiophyta
From the Dr. Hughey’s Bio3 class slide
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Vascular Plant Terminology #2
• _____________ production of one type of spore from one kind of sporangium.
• ______________ production of two types of spores from two different kinds of sporangia.
From the Dr. Hughey’s Bio3 class slide
Homosporous
Heterosporous
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Vascular Plant Terminology #4• Microsporophyll- a modified leaf that bears microsporangia.
– Microsporangia- a sporangium that produces microspores.
• Megasporophyll- a modified leaf that bears megasporangia.– Megasporangia- a sporangium that produces megaspores.
From the Dr. Hughey’s Bio3 class slide
Designed by Pyeongsug Kim, ©2010 www.science-i.com
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Phylum ______________Lycophyta
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Sporangia
Microsporangia Megasporangia
HomosporusHomosporus
HeterosporusHeterosporus
Sporophylls
Microsporophylls Megasporophylls
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Phylum ______________
Genus ______________
Lycopodiophyta
Lycopodium
Sporangia(Spores)
Sporophylls
(Homosporus/Heterosporus)
Lycopodium Sporangium containing Tetrads of Spores. Tetrad = Four. (Meiosis)
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Phylum ______________
Genus ______________
Lycopodiophyta
Microsporangia(Microspores)
Megasporophylls
(Homosporus/Heterosporus)
Megasporangia(Megaspores)
Selaginella
Microsporophylls
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Phylum ______________
Genus ______________
Lycopodiophyta
Isoetes
(Homosporus/Heterosporus)
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SteleStele ~ The central core of tissue in the stem or root of a vascular plant, consisting of the xylem and phloem together with supporting tissues.
___________ the vascular cylinder surrounds a pith.Siphonostele
_________ forms a solid core of xylem encased by phloem.Protostele
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Stem (Lycophyta)
Protostele : A stele that forms a solid core of xylem encased by phloem.
Root (Lycophyta)
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Order ___________
Phylum _____________Pteridophyta
Order ___________FilicalesPolypodium
Order ___________PsilotalesPsilotum.
Equisetales
Equisetum.
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Phylum _____________Pteridophyta
Order ___________PolypodiumFilicales
A
D
B
C
E
F
A:B:C:D:E:F:
Sporophyte (2n)RizomeRootsGametophyte(n) (Prothallus)Spores(n)Sori (contains sporangia)
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Polypodium- Filicales
From the Dr. Hughey’s Bio3 class slideDesigned by Pyeongsug Kim, ©2010 www.science-i.com
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Phylum _____________Pteridophyta
Order ___________FilicalesPolypodium
Sori(naked)
Megaphylls
Sori (sporangia)(covered by ______)Dryopteris
Sporophyte(2n)Sporophyte(2n)
Contains _________Sporangia
indusia
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Phylum _____________Pteridophyta
Order ___________FilicalesPolypodium
Naked
Covered by indusiaAs the sporangia dry, they will begin to discharge their spores.
Spores(n)Spores(n)
Sporangia
Indusia
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What is the main method of dispersal in ferns? Dispersal of spores by wind
Annulus
(Homosporus/Heterosporus)
Covered by indusia
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Gametophytes(n)Gametophytes(n)Phylum _____________Pteridophyta
Order ___________FilicalesPolypodium
Prothallus
(from a spore by )Mitosis
Rhizoids
Rhizoids
Archegonia(egg)
Antheridia(sperms)
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Archegonia
Phylum _____________Pteridophyta
Order ___________FilicalesPolypodium
Gametophytes(n)Gametophytes(n)
Each archegonium contains ________.one egg
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Antheridia
Antheridia
Archegonia
Phylum _____________Pteridophyta
Order ___________FilicalesPolypodium
Gametophytes(n)Gametophytes(n)
When it rains, sperm swim to the eggs in archegonia that are located near the cleft of the heart shape
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Archegonia receiving SpermMultiflagellated sperm(n)
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Sporophyte(2n)
Gametophyte(n)
Phylum _____________Pteridophyta
Order ___________FilicalesPolypodium
Rhizoid
Roots
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Psilotum- Psilotales
From the Dr. Hughey’s Bio3 class slideDesigned by Pyeongsug Kim, ©2010 www.science-i.com
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Order ___________PsilotalesPsilotum.
Phylum _____________Pteridophyta
Sporangia
Sporophyte(2n)
Sporophyte(2n)Sporophyte(2n)
Sporangium
(Homosporus/Heterosporus)
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Gametophyte(n)Gametophyte(n)Order ___________Psilotales
Psilotum.
PteridophytaPhylum _____________
Archegonium Antheridium
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Order ___________Phylum _____________Pteridophyta
EquisetalesEquisetum.
Vegetative shoots Fertile shoots
Strobilus
Node
Node
Internode
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Equisetum- Equisetales
From the Dr. Hughey’s Bio3 class slide
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Sporophyte(2n)Sporophyte(2n)
Strobilus (cone)
Order ___________Phylum _____________Pteridophyta
Equisetales
Equisetum.
Sporophyte(2n)
(Homosporus/Heterosporus)Strobilus (cone)
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Spores(n)Spores(n)
Spores(n)
Elaters Spore(n)
Order ___________Phylum _____________Pteridophyta
Equisetales
Equisetum.
When mature, elaters attached to the spore walls presumably aid in the disposal of spores from the dehiscing sporangia.
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Gametophyte(n)Gametophyte(n)
Gametophyte
-Free-living-Bisexual
Multiflagellated Sperm-require water to swim to egg.
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