Archive | Pteridophytes

Pteridophytes and Bryophytes: Comparison | Plants

In this article we will discuss about the similarities and difference between pteridophytes and bryophytes. Similarities between Pteridophytes and Bryophytes: 1. Life history always encompasses a heteromorphic alternation of generations. 2. Gametophyte generally lacks vascular tissue and is predominantly parenchymatous. 3. Sporophyte reproduces by spore formation and spores are always haploid. 4. Sex organs are multicellular and male sex organ [...]

By |2016-12-22T15:52:56+00:00December 22, 2016|Pteridophytes|Comments Off on Pteridophytes and Bryophytes: Comparison | Plants
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Pteridophytes and Gymnosperms: Comparison | Plants

In this article we will discuss about the similarities and differences between pteridophytes and gymnosperms. Similarities between Pteridophytes and Gymnosperms: 1. There is a regular heteromorphic alternation of generations. 2. Sporophyte is the predominant plant body and is differentiated into root, stem and leaves. 3. Some pteridophytes and some gymnosperms exhibit air cinate vernation in young leaves. 4. There are [...]

By |2016-12-22T15:52:55+00:00December 22, 2016|Pteridophytes|Comments Off on Pteridophytes and Gymnosperms: Comparison | Plants
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Sphenophylum: History and Phylogeny | Botany

In this article we will discuss about:- 1. History of Sphenophylum 2. Anatomy of Sphenophylum 3. Reproduction 4. Phylogeny. History of Sphenophylum: Sphenophyllales represent a small and compact group of sphenopsida. They have left no surviving representatives. The geological history of Sphenophyllales dates back to a time earlier than carboniferous period. Some of the genera like Sphenophyllum appeared during Devonian [...]

By |2016-12-22T15:52:55+00:00December 22, 2016|Pteridophytes|Comments Off on Sphenophylum: History and Phylogeny | Botany
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