The following points highlight the nine characteristic features of living gymnosperms in a plant body. The features are: 1. Morphological Parts 2. Reproductive Organs 3. Ovule and Female Gametophyte 4. Microspores 5. Male Gametophyte 6. Pollination 7. Fertilization 8. Embryogeny 9. Formation of Seed. Living Gymnosperms: Characteristics Features # 1. Morphological Parts: 1. The living gymnosperms include middle-sized or tall [...]
Let us learn about Gymnosperms. After reading this article you will learn about: 1. Classification of Gymnosperms 2. Main Orders of Modern Gymnosperms. Classification of Gymnosperms: It was generally accepted, and expressed in schemes of classification, that the Gymnospermae formed a group coordinated with the Angiospermae. From time to time suggestions have been made for splitting the Gymnospermae into a [...]
Quick Notes on Fossil Gymnosperms! Fossil Gymnosperms : Class-Cycadopsida Order-Pteridospermales (Cycadofilicales): The Ptieridospermae or the Cycadofilicales are fossilized plants that first appeared in the upper Devonian. They were very common throughout the Carboniferous and extended upto Permian strata. After the Permian they began to decline and disappeared altogether. It is in the early Devonian rocks that the members of some [...]