The Debate over Spontaneous Generation after Van Leeuwenhoek discovered the previously “invisible” world of microorganisms, the scientific community of the time became interested in the origins of these tiny living things. Until the second half of the nineteenth century, many scientists and philosophers believed that some forms of life could …

Bryophyte, traditional name for any non-vascular seedless plant. They are the nearest existing relative of early terrestrial plants. They can be found in all ecosystems of earth. Bryophytes are an unceremonious group consisting of three divisions the  liverworts, hornworts  and mosses . Here we will discuss about Sphaerocarpales, which is …

Growth: A process in which there is a change in the form and increase in size and weight by means of cell division, cell enlargement and cell differentiation. Development: A process in which growth, differentiation of organ, maturation and senescence take place in a regular sequence in the life history …

What is Phenol?  A large number of phenolic compounds which occur in plants as secondary metabolites are commonly known as Phenols. They are also known as Phenolies, Phenic acid, Benzenol and Carbolic acid.These compounds were first identified by German chemist Friedlieb Ferdinand Runge. They all are a chemical compounds consisting …

Mitosis is one kind of cell division that occurs in the somatic cells of the body. It produces two daughter cells in each division. The daughter cells have the same number of chromosomes as in mother cells. Therefore, the Haploid mother cell (n) will produce two haploid daughter cells (n) …

Mycoplasma, also known as PPLO- are the simplest prokaryotic cell.    Mycoplasma is a group of small parasitic bacteria that lacks cell walls and can survive without oxygen and generally resistant to antibiotics and can cause pneumonia and urinary tract infections in animals and humans.  Few common species of mycoplasma …

Plant breeding started with sedentary agriculture, particularly the domestication of the first agricultural plants, a practice which is estimated to date back 9,000 to 11,000 years. Initially, early human farmers selected food plants with particular desirable characteristics and used these as a seed source for subsequent generations, resulting in an …

Ratargul Swamp Forest is the only swamp forest located in Bangladesh and one of the few freshwater swamp forests in the world. In the previous article, it’s Geography, Ecosystem & Diversity had been discussed. In this one, some of the beauty enhancer and beneficial trees of Ratargul  will be discussed in …

Introduction Plant breeding has been practised for thousands of years, since the rudiments of human civilization. It is now discussed worldwide by government institutions. Plant breeding is the purposeful manipulation of plant science in order to create desired genotypes and phenotypes for quest. This manipulation involves either controlled pollination, genetic …

Planet Earth is about 4.55 billion years old. A sense for this achingly long time grew only slowly throughout the nineteenth century as geological and biological inquiry unravelled the pattern and processes of the planet’s natural environment. The 4.55 billion figure derives from the decay of radioactive forms of elements …