What is suggested by the similarity of early embryos of different species of vertebrates?

evolution from a distant common ancestor

no evolutionary relationships between the groups

similar environments in the past

How do fossils provide evidence that evolution has happened on Earth?

Fossils show how life forms present today are different than those from the past

Fossils show how the sizes of certain animals has changed drastically over millions of years

Fossils show that some species have gone extinct

Different sedimentary rock layers provide evidence for how the environment has changed over time

When scientists compare animals currently living on different continents, they often find those with similar characteristics, who are not actually close relatives, living in similar environmental conditions even though they are geographically very distant. One example is the Anteater/Armadillos of the Americas and the Pangolin of Africa. What can we deduce from this evidence?

Living things can adapt similarly to similar environments over time.

Living things do not change over time

They must all have the same recent common ancestor

For evolution to happen, this has to occur first:

The environment in which a species lives changes

What is the most important factor that contributes to a species evolving?

what time of year a species reproduces.

Similarities in the structures of two different species provide evidence that the species evolved from a common ancestor. This type of evidence includes similar structures that have different functions. Which of the following pairs of features have a similar structure but have a different function in each organism?

the front leg of a cat and the wing of a bat

human fingernails and monkey fingernails

the wing of a bumble bee and the wing of a bird

Anna found a bone while working on an excavation. She identified it as a dinosaur bone. What event had to happen for this fossilized bone to exist?

Minerals seeped into the dinosaur’s bones before they completely decomposed.

The dinosaur’s soft tissues were replaced with stone.

The dinosaur’s body was exposed to the air for a long time.

The dinosaur’s body was submerged in seawater for a long time.

Tara is comparing the embryos of parrotfish and salamanders. Although the adult organisms look very different, the embryos follow similar developmental pathways. What does this suggest?

that parrotfish and salamanders likely share a common ancestor

that parrotfish and salamanders use their organs for different functions

that parrotfish and salamanders are found in the fossil record

that parrotfish and salamanders have the same genetic makeup

Which of these descriptions is an example of an unused body structure called a vestigial trait?

the tiny leg bones found in snakes that have no legs

a bat’s wing that enables it to fly

the front legs of a dog that supports its weight as it walks and runs

the tentacles of an octopus that aid it in movement and catching prey

Which of these answers correctly pairs a scientific discovery with the type of evidence for evolution that it represents?

unused hind limbs, structural evidence

DNA comparison, embryological evidence

fossilized bones, genetic evidence

developmental patterns, fossil evidence

Which of these answers best describes the relationship between a human’s forearm and a bat’s wing?

similar physical structures with different functions

similar physical structures with similar functions

different physical structures with similar functions

different physical structures with different functions

Which statement about natural selection is NOT true?

Acquired traits are passed down to offspring

Natural selection leads to evolution

Favorable traits are preserved in the population

Organisms best suited for their environment will survive and reproduce

Whale Evolution

Biology

9th Grade

NGSS covered

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MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Some organisms that share a common ancestor have features that have different functions, but similar structures. These are known as

vestigial structures

analogous structures

homologous structures

fossil structures

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-3

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Which of the following is an example of a vestigial structure?

the wings of a red-tailed hawk

the hind limbs of a house cat

the fins of sharks

the tailbone of a human

Tags

NGSS.MS-LS4-2

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

What type of structures are these?

homologous

vestigial

analogous

fossil

Tags

NGSS.MS-LS4-2

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

Two organisms that are closely related would have

very similar DNA sequence

exactly the same DNA sequences

no proteins in common

completely different DNA sequence

Tags

NGSS.HS-LS3-1

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

Which layer is the oldest

Tags

NGSS.MS-ESS1-4

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

If two organisms have similar traits of DNA they are probably

share a common ancestor

share a common environment

share a common population

speciation

Tags

NGSS.MS-LS4-2

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Which of the following is a fossil?

a plant that has recently died

a group of organisms that can reproduce

a structure or organ that no longer functions

a trace of an organisms that existed in the past

Tags

NGSS.MS-LS4-1

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Whale Evolution

Some organisms that share a common ancestor have features that have different functions, but similar structures. These are known as

Which of the following is an example of a vestigial structure?

What type of structures are these?

Two organisms that are closely related would have

Which layer is the oldest

If two organisms have similar traits of DNA they are probably

Which of the following is a fossil?

What is suggested by the similarity of early embryos of different species of vertebrates?

Structures with the same parts have different functions; suggests that organisms share a common ancestry

How do fossils provide evidence that evolution has happened on Earth?

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