IB Bio

The diagram illustrates an embryonic stage of two organisms.Which of the following can be determined by observing the embryos shown in the diagram? 

• The organisms share a common ancestry.

• The organisms belong to the same genus.

• The organisms are native to the same geographic areas.

• The organisms will grow into anatomically similar adults.

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-3

The diagram represents the relationship between beak structure and food in several species of finches found on the Galapagos Islands. The different beak structures observed in the diagram are evidence of

• different species of finches adapting to different environments over many generations

• finches changing their beak characteristics so that they could feed efficiently

• finch species with different beak structures coming to the Galapagos Islands from the mainland

• finches mating with birds of other species and acquiring some of their traits

Tags

NGSS.MS-LS4-2

Over generations of time apart on different islands with different food sources, the separated populations of Galapagos finches accumulated genetic differences until each group had different beaks. This is an example of _____.

• natural selection

• genetic drift

• adaptation

• speciation

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-4

The forelimbs of mammals have similar anatomy because these groups descended from a recent common ancestor. Their bone structure is an example of a(n) ______________ structure.

• vestigial

• analogous

• homologous

Tags

NGSS.MS-LS4-2

What is evolution?

• A measure of the relative survival success of an individual.

• A physical, acquired change that is passed on to offspring.

• A cumulative change in populations' genetic characteristics

• A random change in alleles from generation to generation.

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

NGSS.MS-LS4-4

A group of species that share a common ancestor is called?

• Phylum

• Taxonomy

• Homologous Trait

• Clade

Tags

NGSS.MS-LS4-2

A farmer breeding only his best animal is an example of?

• Speciation

• Artificial Selection

• Natural Selection

• Genetic Engineering

What is accepted by scientists as evidence of evolution?

• I only

• I and II only

• I and III only

• I, II and III

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

Humans use their pelvis and femur to walk. In whales, pelvis and femur are.....

• Vestigial Structures

• Analogous Structures

• Mutations

• Acquired Traits

Tags

NGSS.MS-LS4-2

Analogous structures are similar because.....

• Common Ancestry

• Identical Appearance

• Similar Use

• Artificial Selection

Tags

NGSS.MS-LS4-2