Evolutionary History and Relationships

Organisms that have similar anatomical structures might...

• be twins

• live in the same area

• have a common ancestor

• have mutated

Tags

NGSS.MS-LS4-2

Page 2: What trait separates birds from lizards according to the cladogram?

• fur

• claws or nails

• lungs

• feathers

Tags

NGSS.MS-LS4-2

What is the best definition of a common ancestor?

• an ancestor that two separate organisms evolved from

• an organism from which an organism evolved from

• a trait that separates two organisms

• ancestors that have a backbone

Tags

NGSS.MS-LS4-2

Page 3: What might a similarity between the structure of two organisms' bones mean?

• the two organisms use the bones for the same function

• the two organisms live in the same environment

• the two organisms might have a common ancestor

• the organisms might hunt the same type of prey

Tags

NGSS.MS-LS4-2

What does a phylogenetic tree show?

• evolutionary relationships

• the path up a tree

• the genetics of a phylo tree

• how living fossils got here

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-3

In a phylogenetic tree, recent life is at the _____, while past life is___.

• bottom; at the top

• left side; on the right side

• top; at the bottom

• right side; on the left side

Page 4: What is one thing an evolutionary tree shows?

• the relationship between organisms and their ancestors

• where most of the animals are related on the tree

• how life on Earth started

• how an animal evolved into what it is today

Tags

NGSS.MS-LS4-2

What does a cladogram show?

• relationships between different species

• how much different animals have changed

• how one animal evolved into another

• the possible outcomes of a mutation

Tags

NGSS.MS-LS4-2

Page 3: What are animals called that have not changed for millions of years?

• living fossils

• ancient relics

• old science teachers

• common ancestors

Page 3: What is one example of a "living fossil" in the text?

• a bird

• an earthworm

• a dragonfly

• a horseshoe crab