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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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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Salvinia: Occurrence and Gametophyte | Botany

After reading this article we will learn about:- 1. Occurrence and Distribution of Salvinia 2. Sporophyte of Salvinia 3. Gametophyte 4. Phylogeny. Occurrence and Distribution of Salvinia: The genus Salvinia has 12 species most of which are found to be distributed in the African continent. The genus is represented in India by two species namely S. natans and S. auriculata. [...]

By |2016-12-22T15:52:55+00:00December 22, 2016|Pteridophytes|Comments Off on Salvinia: Occurrence and Gametophyte | Botany
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