Question

Short note 10 th class 1 lesson lamarckism

Answer 1

Explanation:

i) Lamarckism is the theory of inheritance of acquired characters from one generation to another , given by Jean Baptiste Lamarck.

ii)It states that the morphological changes occurring in living organisms are responsible for evolution.

iii)Morphological changes may occur gradually , either due to specific activities or laziness of a particular organism.

iv)For e.g. Browsing on leaves of tall plants caused the neck of the giraffe to become long ; frequent hammering movements caused weakening of the wings of birds like emu ; legs of swans and ducks have become useful for swimming due to living in water ; due to burrowing habits , snakes have lost their legs ; etc.