EVOLUTION Flashcards
What are the 3 types of adaptations
Structural
Functional
Behavioural
What are structural adaptation
Physical features
What are behavioural adaptations
How and organism acts
What are functional adaptations
A special feature of an organism
What is a behavioural adaptation of a kangaroo
Lick their forearms to cool off
What is a structural adaptation of a kangaroo
They have very strong hind legs allowing them to travel for longer distances without using a lot of energy
What is a functional adaptation of a kangaroo
Red kangaroos have super kidneys allowing them to hold more water for longer periods of time
Why do animals need to adapt to their environment
So they can survive and reproduce
What are the 5 key pieces of evidence for evolution
DNA Homologous structures Analogous structures Comparative anatomy Fossils
What are fossils
Formed when an organism becomes buried in layers of sediment and cause little decompositions
What are homologous structures
Structures evolved from their common ancestors
What is comparative anatomy
Compared the structures of organism of living species and fossils
What are analogous structures
Serve same function between organism but have different internal anatomy
What is DNA
All living cells have the same basic DNA structure
What does OVSASRAC stand for
Overproduction Variation Struggle for survival Adaptation Survival of the fittest Reproductive fitness Allele carryover Change to gene pool
What is overproduction
More young are born than survive adulthood
What is variation
Reproducing species show variation on all inherited features
What is struggle for survival
All organisms compete for survival
What are adaptations
Organism adapt to their environment to survive and reproduce
What is survival of the fittest
When some individuals are better suited to their environment
What is reproductive fitness
Stronger individuals are fittest to reproduce Allele carryover
What is change to gene pool
Individuals will change over time to survive and reproduce
