Understanding Clades and Classification

How were animals traditionally grouped before the understanding of evolution?

• Based on shared physical characteristics

• Based on their common ancestors

• Based on their habitat

• Based on their diet

In modern biological classification, what is a clade?

• A group of animals that look similar

• A group of species that share a single common ancestor and all of its descendants

• A group of animals that live in the same environment

• A group of species that have similar diets

What is a simple method to identify a clade on a phylogenetic tree?

• By observing their physical appearance

• By cutting one and only one branch off the tree of life

• By comparing their geographical locations

• By analyzing their feeding habits

If you were to create a clade that includes both sharks and goldfish, what other animal would also have to be part of that same clade?

• A snail

• A spruce tree

• A human

• A bird