Primary vs Secondary Meristem Meristems are a group of plant cells that remain in a continuous state of division. The meristematic cells continuously produce new cells through the life of the plant. In previous posts, we have discussed the Characteristics of Meristematic Cells, Classification of Meristems and Difference between Meristematic and Permanent Tissues. The present … Read more
Stem: Stem is the part of the plant which lies above the surface of the soil. It arises from the plumule of the embryo. Stem shows positively phototropic and negatively geotropic growth. Stem possess nodes and internodes. Branches, leaf, flower bud and bracts are developed from nodes. Root: Root is the part of the plant … Read more
Shoot Apex vs Root Apex Apex is the growing terminal portions of the stem and roots in plants. The apical portion of the stem is called ‘Shoot Apex’ and that of the root is called ‘Root Apex’. The apex portions of both stem and root possess a meristematic tissue called the ‘Apical Meristem’. The shoot apex … Read more
Prokaryotic vs Eukaryotic Chromosome Prokaryotes and Eukaryotes are the two major domains of living organisms. This classification is on the basis of the features of their cellular features primarily the nature of membrane bounded organelles and organization of the genetic materials. Both prokaryotes and eukaryotes contain the genetic materials which are organized into specialized structures … Read more
Linkage vs Crossing Over Linkage and crossing over are two different but inter-related genetic events in Eukaryotic organisms. Genetic Linkage: The tendency of genes (DNA sequences) to stay together in a chromosome is called genetic linkage. The genes linked together in a chromosome are called the Linkage Group. The linkage group is equivalent to a … Read more