ET Comparative Anatomy 4/11/25

Whales have pelvic bones. What type of structure does this best represent?

• Homologous structure

• Analogous structure

• Vestigial structure

• None of the above

Tags

NGSS.HS-LS4-1

Humans, birds, whales, and lizards all have similar arm bones. What are these structures called?

• Embryological Structures

• Homologous Structures

• Analogous Structures

• Ancestoral Structures

Tags

NGSS.MS-LS4-2

A fossil of an extinct dinosaur is found and the anatomy of the fossil shows similarities to that of a bird. What could this mean?

• This is purely by chance and isn't significant
• The extinct dinosaur and modern bird share a common ancestor
• All dinosaurs evolved into birds and that's why there aren't any dinosaurs alive today
• Dinosaurs choose to fly, and evolved into birds to escape predation and capture food

Tags

NGSS.HS-LS4-1

NGSS.HS-LS4-2

Honey possums lick nectar from flowers using a long tongue made out of soft muscle. Butterflies lick nectar from flowers using a long tongue made of hard protein. What type of structure is the long tongues?

• Analogous structure

• Homologous structure

• Fossil record

• Vestigial Structure

What is the purpose of examining anatomical features in the study of evolution?

• To find the strongest organism

• To uncover relationships between ancient and current species

• To create new species

• To study animal behavior

Tags

NGSS.HS-LS4-1

The blind cave fish spends its entire lifespan in the dark, and does not have pigment in its scales (see the bottom image - the reddish looking one). If this cave fish had eyes, its eyes would be considered...

• ...a vestigial organ.

• ...an adaptation to fit its environment.

• ...unreliable.

• ...an analogous structure.

Tags

NGSS.HS-LS4-4

NGSS.HS-LS4-5