In this article we will discuss about the Natural System of Classifying Organisms. It is a system of classification which takes into consideration comparable study of a number of characters so as to bring out natural similarities and dissimilarities and hence natural relationships among the organisms. The system employs those characters which are relatively constant. They include morphological characters, anatomical [...]
The following points highlight the two main types of reproductive cycle in virus. The types are: 1. Lytic Cycle 2. Lysogenic Cycle. Type # 1. Lytic Cycle (Fig. 2.5): It is the reproductive cycle of virulent phages, e.g., T4 bacteriophage. The phage attaches itself to the host cell (e.g., Escherichia coli) through its tail fibres. The fibres bend and bring [...]
The upcoming discussion will update you about the differences between Bacteria and Cyanobacteria. Difference # Bacteria: 1. The cells are comparatively smaller. 2. The cell wall is 1—2 layered. 3. Plasmodesmata and pores do not occur in cell wall. 4. They exhibit lesser structural elaboration. 5. Bacteria are both autotrophic and heterotrophic. 6. Autotrophic bacteria possess bacteriochlorophyll. 7. Photosynthesis is [...]