Question

In ancient Greece, Aristotle developed a system of classification which was used for the next 2000 years to describe relationships between living things. Which of the following questions would be most difficult to answer based on Aristotle's classification of living things?
Are cows more complex than oak trees?

Are tomato plants higher or lower than snails?

Which species shows less complexity, a cat or a dog?

Which organism is lower, a squirrel or a lobster?

Answer 1

The correct answer is Which species shows less complexity, a cat or a dog?

That is because according to him, land animals were more complex than sea animals, and plants were less complex than animals, so all other are easy to decide on their complexity. Cats and dogs however are difficult to determine who is more complex.