Question

About 2000 years ago, Aristotle classified living organisms based on their movement—organisms that could move were classified as animals and those that could not were classified as plants. Animals were then divided into blood and bloodless (not having red blood) animals. He also classified organisms as those that lived on land, water, or in air. Furthermore, based on their ability to fly, swim, crawl, or walk, animals were classified as birds, fish, reptiles, and so on. Which of the following best explains the limitations of Aristotle’s classification system?

Answer 1

Answer:

Option D

Explanation:

Options for the given questions would be -

A . The classification was only based on the difference in the body sizes of organisms .  

B . The classification was based more on external appearance and not on the internal anatomy of organisms .

C . The classification was only based on the types of locomotion shown by organisms .

D . The classification was based more on behavior and not on the structural comparisons between organisms .

Solution -

In Aristotle’s classification system, species were grouped into different categories based on the physical and visible structural differences only. In the initial stage, the animals were grouped into two groups a) vertebrates and b) Invertebrates based on the color of blood or presence and absence of red blood. These two groups were further subdivided into five genera, genus and species.  

No anatomical or genetic basis of differentiation was crafted at that time which became a limiting factor in later stage  

Hence, option D is correct

Answer 2

You don't provide the options, but the limits are that there are plants that move, depending on your definition of movement. Also, some reptiles have differing movements(snake vs lizard), as do mammals(humans vs koalas vs cats), and some birds can't fly (penguins and ostriches). These classifications don't give enough information. I'm sure these aren't the only ones