WAEC Biology 1993 Question 59

Question 59

Evolution

Lamarck's evolution theory could be summarised by the statement that

  1. A.only the fittest can survive in a challenging environment
  2. B.species that are unable to adapt become extinct
  3. C.new characteristics do not arise in organisms in time of need
  4. D.the changing environment imposes structural physiological and behavioural changes in organisms
  5. E.in a changing and unstable environment nature rejects the weak
Show the answer and explanation

Answer: D (the changing environment imposes structural physiological and behavioural changes in organisms)

Explanation

Lamarck taught that the environment causes organisms to change (by use and disuse) and that these changes are passed on.