Tag Archives: evolution

There are several factors that influence seed germination such as temperature, moisture, and seed dormancy. Temperature and moisture levels are fairly easy to explain but what is seed dormancy? All the viable seeds have the capacity to germinate if placed under suitable conditions necessary for germination. In certain plants, such …

Five years with nature aboard, the Beagle destroyed Darwin’s faith in the fixity of species. In July, 1837, shortly after the voyage, he started his first notebook on “transmutation.” Already convinced that evolution had occurred, Darwin sought a theory to explain its mechanism. After much preliminary speculation and a few …

Reproduction is one of the fundamental features of life on earth. Reproduction means ‘to produce’. Plant reproduction is a biological process by which plants produce new individuals or offspring. Reproduction enables the continuity of plant species, generation after generation. Modes of Reproduction Modes of reproduction in crop plants are mainly …

A domain is the highest taxonomic level of species in biology. In 1977, Woese and his coworkers developed the groundbreaking three-domain system.  They proposed this classification based on differences in the sequences of nucleotides in the cell’s ribosomal RNAs (known as 16S rRNA). They created the first worldwide tree of …

The synthetic theory of evolution describes the evolution in terms of genetic variations in a population that leads to the formation of a new species. It explains the contribution of factors such as genetic variations, reproductive and geographical isolation, and natural selection. It is a modern concept that emerged from …

They are the earliest known vascular plants that originated in the Silurian period (400 million years ago) of the Palaeozoic Era and subsequently diversified and formed the dominant vegetation on earth during Devonian to Permian period. There are controversies regard­ing their origin and evolution. There are two broad theories about …

(Evolution of Green Algae has three articles based on its three trends. All of these articles start and end with same paragraphs. If you want to avoid these intros, directly migrate to the point “Volvocine  line of evolution” which is after the second horizontal line). Evolution of Green Algae: Tetrasporine Trend …

(Evolution of Green Algae has three articles based on its three trends. All of these articles start and end with same paragraphs. If you want to avoid these intros, directly migrate to the point “Chlorococcine line of evolution“). Evolution of Green Algae: Vovocine Trend Evolution of Green Algae: Tetrasporine Trend …

(Hello..readers, Evolution of Green Algae has three articles based on its three trends. All of these articles start and end with same paragraphs. If you want to avoid these intros, directly migrate to the point “Tetrasporine line of evolution” which is after the second horizontal line). Evolution of Green Algae: Volvocine …