In this article we will discuss about the process of reproduction and development in ephedra with the help of diagrams. Reproduction in Ephedra: In dioecious Ephedra, male and female cones are borne in the axils of determinate shoots. These may be solitary but most are arranged as dichasial cymes. Male cone of E.foliata consists of a central axis and about [...]
In this article we will discuss about the anatomy of Cycas with the help of diagrams. Pinnae of Cycas leaves have a single mid-vein without any lateral veins but extending up to the lamina and quite prominent are the sheets of transfusion tissue (Fig. 15.3A, B), which acts as lateral conducting tissue in the leaflet without vein. A single vascular [...]
In this article we will discuss about the modes of reproduction in pinus with the help of diagrams. Pinus is monoecious but male and female cones are borne on separate branches. The male cones are on lower and female cones are on upper branches. The male cones which replace dwarf shoots, occur in clusters (Fig. 16.7A). The number of male [...]