Unit Three- Evolution

Question 1

evolution

Answer 1

-change in the frequency of a population overtime
-due to interactions with biotic & abiotic factors

Question 2

what is a adaptation

Answer 2

-structure, behaviour, or physiological process that helps organisms survive & reproduce in a particular environment

Question 3

structural adaptation

Answer 3

-physical features adapted for lifestyle

Question 4

mimicry

Answer 4

structural adaptation
-allows organisms to resemble a harmful species

Question 5

camouflage

Answer 5

structural adaptation
allows organism to blend into environment

Question 6

behavioural adaptation

Answer 6

actions that organisms carry out in order to survive

ex: bird migration

Question 7

physiological adaptation

Answer 7

metabolic adjustment of cells or tissues to allow for better survival in an environment

ex: hibernation reduces metabolism to save energy

Question 8

how do development of adaptations happen

Answer 8

-gradual, accumulative changes that help organisms survive
-result from random heritable mutations in DNA

*NUMEROUS GENERATIONS

Question 9

result of variations within a species

Answer 9

-increase chance of survival/reproduction
-will become more frequent

Question 10

divergent evolution

Answer 10

populations becomes more similar from different envirmoent

Question 11

convergent evolution

Answer 11

population becomes more similar from similar environments