Whale Evolution

Which animal is the LEAST similar to the Human from the list below?

• Bat

• LIzard

• Whale

• Bird

Tags

NGSS.MS-LS4-2

The similarities of the bones in the diagram provide evidence that---

• The organisms shown lived in the same natural envionrment

• The organisms shown may have developed from a common ancestor

• The organisms shown have the same genetic diseases

• All vertebrate species have identical forelimbs

Tags

NGSS.MS-LS4-2

The forelimbs of humans, cats, whales, and bats are similar in structure due to having a common ancestor hundreds of millions of years ago. Is this considered homolgy or analogy?

• Homology

• Analogy

Tags

NGSS.MS-LS4-2

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

What is common ancestry?

• When a species no longer exists

• When organisms are descended from a single ancestor

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-3

What is a vestigial structure?

• A structure that has origins in a common ancestor, but has evolved to perform the same functions

• A structure that has origins in a common ancestor, but has evolved to perform different functions

• A structure that makes an organism better suited to a habitat

• A structure that has lost its function but is still part of the organism

Tags

NGSS.MS-LS4-2

Which of the following is evidence of a common ancestor?

• Vestigial structures

• Fossil record

• Similarities in the embryo

• All of these

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-3

The structures of the front flipper of a whale and the forearm of a wolf have similar bone structure and derive from a common ancestor. This is an example of __________.

• analogous structures

• homologous structures

• vestigial structures

• None of these

Tags

NGSS.MS-LS4-2

Structures that were once functional in the past but no longer serve a purpose due to evolutionary adaptations and physiological changes are referred to as __________ structures.

• homologous structures

• analogous structures

• vestigial structures

• None of these

Which of the following is a significant piece of evidence for whale evolution?

• Fossil record showing transitional forms

• Presence of gills in modern whales

• Ability of whales to live on land

• Whales having feathers

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2