Chapter 15 Vocab

Question 1

A well supported testable explanation of phenomena that have a
occurred in the natural world

Answer 1

Theory

Question 2

During his travels Darwin made numerous observations and collected evidence that led him to propose a revolutionary hypothesis about the way life changes over time

Answer 2

H

Question 3

The remains of ancient organisms

Answer 3

Fossils

Question 4

What was Darwin’s important finding

Answer 4

He observed that the characteristic of many animals and plants varied noticeable among the different islands

Question 5

Nature provided the variation and the humans selected those variations that they found useful

Answer 5

Artificial selection

Question 6

Members of each species compete regularly to obtain food, living space, and other necessities of life

Answer 6

Struggle for existence

Question 7

The ability for an individual to survive and reproduce in its specific environment

Answer 7

Fitness

Question 8

Any inherited characteristic that increases an organisms chance of survival

Answer 8

Adaptation

Question 9

Individuals that are better suited to their environment survive and reproduce successfully

Answer 9

Survival of the fittest

Question 10

Survival of the fittest

Answer 10

Natural selection

Question 11

Each living species with changes form other species over time.

Answer 11

Descent with modification

Question 12

Colman ancestors of all living things

Answer 12

Common decent

Question 13

Structures that have different mature forms but develop from the same embryonic tissues

Answer 13

Homologous Structure

Question 14

Organs that serve little or no function in an organism

Answer 14

Vestigial organs

Question 15

Change over time and the process by which modern organisms have descended from ancient organisms.

Answer 15

Evolution