science
Grade6
Easy
Question
What are the postulates of Lamarck’s theory of evolution?
- Individuals gain characters that they need and loose traits that they don’t need.
- Acquired traits are inherited.
- Change in environment creates change in organism.
- All of the above
Hint:
Various postulates were described by the Lamarck such as
use and disuse of organs, inheritance of acquired traits, new need and internal vital force.
The correct answer is: All of the above
- Jean-Baptiste Lamarck proposed his theory 'Lamarck theory; in 1809.
- His theory of evolution was well accepted in 19 century but was discarded in the 1930s.
- He explained various postulates in his theory.
- The main was the inheritance of the acquired trait. In this, he explains that the traits which the parents acquired can be inherited by the offspring.
- Use and disuse of organs: in this, he explained that the organ which is not in the use of an organism ceases to exist.
- His theory of new need states that the environment plays a vital role in the changes seen in all organisms. Change in the environment gives rise to the new need to adapt to its surroundings better.
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