Darwin's Theory of Evolution Chapter 15 Test with Complete Solutions

Darwin's Theory of Evolution Chapter 15 Test with Complete Solutions Evolution - Answer-Change over time Artificial selection - Answer-Plant and animal breeders use genetic variation to selectively breed certain plants or animals to get desired results Struggle for existence - Answer-Members of each species compete for food, space, and other necessities Fittness - Answer-What Darwin called the ability of an individual to survive and reproduce in a specific environment Adaptation - Answer-Any inherited trait (physical or behavioral) that increases the organism's chance of surivial Survival of the fittest - Answer-Darwin's idea that those organisms best suited to their environment will be the ones to survive and reproduce Natural selection - Answer-Darwin's theory that individuals that tend to survive are those that have variations that make them best suited for their environment. Decent with modification - Answer-The principle that each living thing has changed over time. Homologous body structures - Answer-Structures that have different mature forms but develop from the same embryonic tissue. Vestigial organs - Answer-Organs in many animals that are so reduced in size that they are just traces of homologous structures