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1) Gymnosperms are seed plants that were dominant during the Mesozoic era but declined with the rise of angiosperms. They bear naked seeds not enclosed in an ovary. 2) In Bangladesh, 5 species of gymnosperms grow naturally, including Cycas pectinata. Gymnosperms display heterosporous reproduction and lack true flowers, fruits, and double fertilization. 3) Key characteristics of gymnosperms include the production of pollen on sporophylls within cones, naked seeds, vascular bundles lacking vessels, and hap
- Author
- Ishrak Zaman
- Language
- EN