In this essay we will discuss about archaeopteris which belongs to the family of progymnospermopsida. After reading this essay you will learn about:- 1. Habit of Archaeopteris 2. Morphology of Archaeopteris 3. Stem Anatomy 4. Reproductive Organs. Essay # 1. Habit of Archaeopteris: Large trees up to 18 m high with a large crown of spirally arranged pseudomonopodial branches (Fig. [...]
In this essay we will discuss about:- 1. Root of Cordaitales 2. Stem of Cordaitales 3. Leaf 4. Fructification 5. Seed. Essay # 1. Root of Cordaitales: The roots of cordaitales are highly branched and shallow forming stilt roots like those of mangroves. This indicates the halophytic nature of the plants which grew along the sea shores. Anatomically, the root [...]
Read this essay to learn about the life cycle of ginkgo biloba, explained with the help of suitable diagrams. Sporophyte of Ginkgo Biloba: Ginkgo biloba is a tall deciduous tree (up to 30 m height) giving rise to a very irregular pattern of branching. The branching is restricted to the upper part of the stem, thus giving the tree an [...]