Pteridophytes

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14 Terms

1
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the Pteridophytes include…
horsetails and ferns
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xylem and phloem
first terrestrial plants to possess vascular tissues
3
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where are they found
* mostly cool damp shady places
* sandy soil
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main plant body
sporophytic
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leaves
* microphylls(like in Selaginella)
* macrophylls(like in ferns)
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what does the sporophyte produce and what is that attached to
* bears sporangia which is subextenehed to leaf like - appendages called **sporophylls**
* can form strobili or cones(Selaginella, Equisetum)
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when spores germinate, what do they create
thalloid gametophytes called prothallus
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why are pteridophytes restricted to narrow geographical regions
* gametophytes require cool damp shady places and need water for fertilization
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male and female sex organs
* antheridia
* archegonia
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what is required for the transfer of antherozoids(male gametes) to archegonium
water
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homosporous
* spores of similar kind
* majority of pteridophytes
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heterosporous
* different kinds
* macro and micro - Selaginella, Salvinia
* macro(female), micro(male)
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development of zygote into embryo in female gametophyte is what
seed habit
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classes and their genera
* Psilo**psida**(Psilotum)
* Lyco**psida**(Selaginella, Lycopodium)
* Spheno**psida**(Equistum)
* Ptero**psida**(Dryopteris, Pteris, Adiantum)