Answer:
The correct answer is to: characterized them and study them on the based of shared characteristics, similarities and phylogeny.
Explanation:
Arranging different type of organisms on the basis of their shared characteristics such as physical similarities, anatomical characters, phylogeny, habitat they share and many more, in order to study them easily known as classification.
Classification helps understanding the diversity of living organisms with the help of their features, similarities and differences. Aim of the classifying organisms is to, identification of organisms, to establishing the evolutionary relation among different type of organisms and studying the phylogeny.
Answer:
Phenotypic changes:
When Rhodobacter is cultured in total darkness for multiple generations, the ability to produce it's own photopigment reduces with time with little or no ability to undergo its own photosynthesis due to absence of enzymes or pigment for photosynthesis.
It becomes expensive for the Rhodobacter to undergo photosynthesis. This allows mutants that can grow in the dark to take over from the culture grown in the dark.
Evolutionary processes:
It's natural selection that allows the fittest organism to survive. As in the case of the mutants
The cell would fall apart it has no walls to hold it together
