Question

Which book is the starting point for the phylogenetic system?
(a) Origin of species
(b) Die Natürlichen Pflanzenfamilien
(c) The phylogenetic taxonomy of flowering plants
(d) Historia plantarum

Answer 1

The phylogenetic system can be represented via a diagram known as phylogenetic trees. It tells about the common ancestry of various species or groups that are evolved. It is helpful in studying the relationship between various organisms.

Complete answer:
After the system of classification is published by Linnaeus, the ideas began to change about classifying organisms, and Darwin's major work on evolution which is written in his book 'On the Origin of Species by Natural Selection' is published in 1859 incorporating evolutionary history consist of genetic relationships, of the organisms.
The study of the evolutionary history of similar groups having some ancestral characters through the phylogenetic tree. Its best example is the "Darwin's Tree of Life" which indicates the process of evolution in species. The new branches of the tree show evolution.
-Others went extinct after being dead without any descendent

Additional information:
-Cladistics is the most common method of incorporating information into phylogenetic trees. It was widely accepted and was developed in 1950 by Wili Hennig.
-The word cladistics is derived from the word clade, meaning cladogram.
-The small clades constitute fewer species having common ancestors while large clades constitute a larger number of species with the same ancestral characters.

So, the correct answer is "Origin of species".

Note:
Phylogenetic tree or the phylogeny can be called an evolutionary tree used for determining evolutionary relationships. This phylogenetic relationship of the species is helpful in studying certain diseases in organisms like HIV. This study is based on the evolution of ancestors and results in the production of a tree-like structure called cladograms.