Here is list of sixteen gymnospems:- 1. Cycas 2. Ginkgo 3. Pinus 4. Cupressus 5. Thuja 6. Juniperus 7. Cryptomeria 8. Podocarpus 9. Taxus 10. Cephalotaxus 11. Picea 12. Araucaria 13. Cedrus 14. Abies 15. Ephedra 16. Gnetum. 1. Cycas: Vegetative Structure: The plant is arboreal, un-branched palm tree like. The stem is columnar and also covered by an armour [...]
In this article we will discuss about Bennettitales. After reading this article you will learn about: 1. Meaning of Bennettitales 2. Origin of Bennettitales 3. Nomenclature, History and Distribution 4. Distinguishing Features 5. Classification 6. Affinities. Contents: Meaning of Bennettitales Origin of Bennettitales Nomenclature, History and Distribution of Bennettitales Distinguishing Features of Bennettitales Classification of Bennettitales Affinities of Bennettitales 1. [...]
The upcoming discussion will update you about the difference between gymnosperms and pteridophytes. Difference # Gymnosperms: 1. In gymnosperms, roots are usually tap roots. 2. Majority of them show xerophytic characters. 3. In gymnosperms, cambium is present and the secondary wood is common. 4. Neck canal cells and sometimes venter canal cell are absent in the archegonia,making the latter a [...]