In this article we will discuss about heterospory and seed habit in pteridophytes. Heterospory in Pteridophytes: Most of the Pteridophytes produce one kind of similar spore. Such Peridophytes are known as homosporous and this phenomenon is known as homospory. However, there are some Pteridophytes which produce two different types of spores (differing in size, structure and function). Such Pteridophytes are [...]
In this article we will discuss about the external, internal and reproductive structures of rhynia. External Structure of Rhynia: The plants of Rhynia were herbaceous. R. major was 50 cm. in height and 1.5 to 6 mm in diameter whereas R. gwynne-vaughani was only about 20 cm. in height and 1 to 3 mm in diameter. The plant body was [...]
In this article we will discuss about:- 1. Habit and Habitat of Lycopodium 2. External Morphology of Lycopodium 3. Internal Structure 4. Reproduction 5. Morphological Nature of Protocorm 6. Economic Importance 7. Life Cycle Patterns. Habit and Habitat of Lycopodium: Lycopodium is commonly known as 'club moss' due to their moss like appearance and club shaped strobili. It has about [...]