Evolution and Natural Selection

WHAT DOES DARWIN'S THEORY SAY?

• THE ANIMAL CHANGES ON THE DIFFERENT GENERATIONS AS A RESULT OF THE ACTIONS OF THE PARENTS TO SURVIVE.

• THE CHANGES ON THE ANIMALS ARE THE RESULT OF THE NATURAL SELECTION.

DARWIN COLETED.....

• ROCKS AND WATER

• ANIMALS AND PLANTS

What mechanism did Darwin propose for evolution?

• natural selection

• fossil record

• use it or lose it

• biochemistry

Identify the image. How does this image provide evidence for evolution?

• Homologous structures show that even animals from different species have the same basic structure, suggesting they may share one common ancestor.

• Homologous structures show that animals for different species have a variety of different structures, suggesting that each has a different ancestor.

• Analogous structures show that bones length plays a vital role in the evolution of various species.

• Analogous structures show that the same basic bone structure may be used in a variety of different functions.

How does the study of embryology provide evidence for evolution?

• Even for species that look very different as adults, many species look very similar as embryos, suggesting they may share one common ancestor.

• The variety in embryo structure and form suggests that their are many different ancestors for each distinct type.

• All organisms must undergo an embryo stage of development. This suggests some degree of relatedness between species.

• Embryology shows that organisms that appear similar as embryos will also share the same similarities as adults.

The forelimbs of penguin, alligator, bat, human are which of the following?

• homologous structures

• vestigial structures

What type of structures are these?

• homologous

• vestigial 

• analogous

• fossil

What is the primary mechanism that drives evolution according to Darwin's theory?

• Genetic drift

• Natural selection

• Mutation

• Artificial selection

Which of the following best describes 'survival of the fittest'?

• The strongest individuals survive

• The most intelligent individuals survive

• Individuals best adapted to their environment survive

• The largest individuals survive

What is the term for a trait that increases an organism's ability to survive and reproduce?

• Mutation

• Adaptation

• Variation

• Speciation