HI,
Arundhati roy,
Darwin and lamarck both explains about evolution and how new chracters are evoled in orgnisms.
Darwinism explained how environment influences the speciaton process.
Lamrck how the internal things help to acquire new characters.
Above are the 2 major differences.
The answer is
characteral changes that occur in germ cells are transfered too next generation,
but the chages that occur in vegetative cells does not transfer to the next generation.
The above stateent explained by Augustus weisman.