Learning objectives: Evolutionary relationships and affinities of Gymnosperms with Pteridophytes and Angiosperms; Similarities and Differences between Pteridophytes and Gymnosperms; Similarities and Differences between Gymnosperms and […]
The Gymnosperms are with high economic importance to mankind. For easy understanding, the economic importance of Gymnosperms can be categorized in the following heads: Economic […]
What are Caytoniales? Ø Caytoniales were a small group of extinct Gymnospermic plants. Ø First described by Hamshaw Thomas in 1925 from the late Triassic […]
Glossopteridales and Glossopteris Ø Glossopteridales included an extinct group of seed plants (Gymnosperms). Ø They were originated during the Permian period on the Gondwana Continent. […]
Pteridospermales PPT: What are Pteridospermales or Cycadofilicales? Geological Horizon / Origin of Pteridospermales, Who Discovered Pteridospermales? What are the Characteristics of Pteridospermales, Morphology of Pteridospermales, […]
Cycadofilicales / Pteridospermales Ø Pteridospermales are a group of Fossil Gymnosperms. Ø They are also called as Cycadofilicales (Chamberlain used the term). Ø As the […]
Pteridophytes vs Gymnosperms Pteridophytes Pteridophytes are a group of primitive land plants belongs to Cryptogams. They are the first plant group with vascular tissue for […]
Classification of Gymnosperms by Chamberlain: Classification of Gymnosperms, Outline of the history of Classification of Gymnosperms, Chamberlain System of Classification of Gymnosperms, Class Cycadophyt and […]
There are many systems for the classification of Gymnosperms in the literature. Robert Brown (1827) for the first time recognized Gymnosperms as a separate group […]