Natural Selection And Evolution

Question 1

Natural selection

Answer 1

• process where organisms which are most adapted survive and reproduce
• passing their genes on
• species can evolve like this

Question 2

Evolution

Answer 2

Development of a species over time

Question 3

Fossil

Answer 3

• The remains of plants and animals
• Have turned to stone
• reverted by natural processes

Question 4

Evolution process

Answer 4

• started with unicellular organisms
• overtime they evolved to become multicellular organisms
• this resulted in organisms that can live on land/air

Question 5

Natural selection process:

Answer 5

-organisms in a species show variation
-organisms which are most adapted will survive/reproduce
-less adapted organisms will die out + ’survival of the fittest’
-genes pass onto offspring making them well adapted too
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Question 6

Peppered moths example of evolution/natural selection

Answer 6

• before industrial revolution moths were pale to camouflage w/ the bark
• some moths were dark coloured
• after Industrial rev, soot covered trees = made the Black
• the pale coloured moths died out = they were spotted easily
• darker coloured maths survived more and reproduced
• darker coloured moths overtook pale moths in population