write a short note a)Lamarckism. b) Darwin 's theory of natural selection. c)Embryology. d) Evolution. e)Connecting link.
Answers
Explanation:
Lamarckism-
1. jean Baptist Lamarck proposed that morphological changes occurring in living organisms are responsible for evolution & reason behind those morphological changes is activities or laziness of that organisms he called this concept as principal of use Or disuse of organisms.
2. the neck of giraffe becomes too long due to browsing on leaves of tall plant by extending their neck for several generations.
3. wings of birds like ostrich & emu have become weak due to no use.
4.legs of Bird like swan & duck have become useful for swimming due to living in water.
5. all these examples are types of acquired characters & are transformed from one to another generation this is called theory of inheritance of acquired characters or lamarkism.