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Vascular plants without seeds: Lycophytes, Pterophytes (Psilotum (Whisk…
Vascular plants without seeds: Lycophytes, Pterophytes
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Lycophytes
A.Club mosses
1.Club like projections above small leaved, conifer like stems.
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Life cycle
- Gametophyte: begins with spores that germinate into prothalli and ends with the fertilization of female gametes by male sperm.
- Sporophyte: starts with the fertilized eggs that develop into spore producing plant
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B.Quill worts
General introduction
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- Grassy, spikelike leaves and mostly found in swampy, cooler parts of North America and Eurasia.
- Sporangium present in the inner leaf surface
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Life cycle 
C.Spike moss
General introduction
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- Widly distributed all over world mostly in tropic area
- Most are forest plants while some grow on trees and some in dry areas.
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Psilotum (Whisk fern)
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Life cycle: 2. Phases
- Sporophytes: large asexual phase that produces spores that develop into very small colorless sexual plant known as gametophytes.
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