Tetrapods

Select ALL the evidence that supports the idea that four-legged animals came from fish.

• All are vertebrates

• The embryos and DNA are similar

• The fossil record shows relatedness

• They have all the same bones

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

NGSS.MS-LS4-3

What characteristics of Tiktaalik make it a tetrapod? Select all that apply.

• Eyes on the top of head

• Flat head

• Hip bones

• A neck

• Tetrapod-like ribs

Tags

NGSS.MS-LS4-2

Why is the one bone/two bone/many bones/digits limb pattern important for origin of the tetrapods?

• It completes the fossil record.

• It shows how fish developed legs once on land to become tetrapods.

• It can show how all tetrapods still have basic fin bones.

• It can show a pattern of relatedness over time.

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

Why did scientists lead by Shubin decide to search in the Canadian Arctic for transition fossils? Select all that apply.

• Age of the rocks

• Kind of the rock there

• Other parts of the world had been explored already

• The climate/weather was the best there

How long did it take for vertebrates to transition from water to land?

• Thousands of years

• Hundreds of thousands of years

• Millions of years

• A billion years

When do scientists believe Tikaalik lived?

• 380 MYA

• 375 MYA

• 370 MYA

• 365 MYA

• 360 MYA

Where would Tikaalik be positioned on our timelines? Between which two other organisms?

• Between the Lungfish and Eusthenopteron

• Between Eusthenopteron and Acanthostega

• Between Acanthostega and Pederpes

• Between Pederpes and modern day humans

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

Tetrapods are

• fish

• 4-limbed animals

• animals with backbones

• animals with digits

Tags

NGSS.MS-LS4-2

What was the purpose of looking at the transitional fossils between fish and tetrapods? (Choose the BEST answer)

• To look at the origin of species

• To see how comparing the anatomy of fossils can be used as evidence of ancestry lines

• To look at fossils

• To take up class time

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

Scientists believe that tetrapods evolved from

• fish

• monkeys

• lichens

• they did not evolve

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2