Evolution

Evolution is an important concept in this era as well as questions related to it. So, in case here we are giving evolution test questions and answers for students at botanystudies.com. Students can prepare for there exams, quizzes, test at our website. Define evolution? Ans: The change over time in specie is called evolution. What is theory of acquired characters? ...

The fossil record shows that there are four major periods of plant evolution, which took place the history of evolution of earth. Since the first organism formed on earth. But before discussing the periods of evolution let’s discuss the basic concepts of evolution in plants diversity. Basic Concept of Evolution in Plants Diversity Nearly all plants reproduce sexually. Most plants ...

Terrestrial ecosystems are distinguished from aquatic ecosystems. An Aquatic Ecosystem is an ecosystem in a body of water. While the community of organisms and their environment that occurs on the land masses of continents and islands are Terrestrial Ecosystem. Aquatic Ecosystems Communities of organisms that are dependent on each other and on their environment, live in aquatic ecosystems. The two ...

Origin of First Plant Cell on Earth (First Prokaryotic cell) happened about 1.7 billion years ago. Up to 700 MYA (Million Years Ago), life remained fairly primitive; the distinctions between plants and animals were not very clear-cut. For example, bacteria (monera) show a variety of forms. Some take in chemicals and depend on atmospheric CO2, like plants (autotrophs). Others take in ...

Survival of the fittest was first used by British philosopher Herbert Spencer. Then it was used by Charles Darwin. Herbert Spencer first used the phrase after reading Charles Darwin’s On the Origin of Species. He used this term in his Principles of Biology (1864). He drew parallels between his own economic theories and Darwin’s biological ones. He writes that this ...

The evolution of ecological and phenotypic diversity within a rapidly multiplying lineage is called or known as adaptive radiation. It starts with a recent single ancestor. This process results in the speciation and phenotypic adaptation of species. These species exhibiting different morphological and physiological traits. Thus, they can exploit a range of divergent environments. Adaptive radiation can be graphically illustrated ...

Evolution is not a creative work force. It is not working for the progress. Evolution helps some individuals in a population to survive. They reproduce more effectively than others in the population. It causes changes in gene frequencies. Some factors do follow Hardy Weinberg assumptions. Therefore, gene are changed from one generation to the next. It causes evolution. Mechanisms of ...

Hardy Weinberg Equilibrium was the combined idea of English mathematician Godfrey H. Hardy and German physician Wilhelm Weinberg. They independently derived a mathematical model in 1908. This model explains what happens to the frequency of alleles in a population over time. Different Names The Hardy-Weinberg Equilibrium was given different names at that time. The names of that list is as follow: ...

The combination of the principles of population genetics and Darwinian evolutionary theory is called as modern synthesis. Modern synthesis comes from the study of genetics. It explains why variations exist among individuals. It also explains how they pass to the future generations. Modern Synthesis Theory of Evolution Some variations give an advantage to individuals. Therefore, nature selects them through natural ...

Evidences of Evolution shows the different species living on earth have evolved from simple to more advance and complex beings with the passage of time. And all the organisms have been evolved from a common ancestor known as Progenote Ancestor. Thus, these evidences support the evolution of organisms on earth. Evidences of Evolution from Biogeography The study at the geographic ...