Question

Explain the Lamarck theory of giraffe?


class 12th CBSE Biology sample paper

Answer 1

Lamarck explained his theory by given the example of giraffe .

The ancestors of giraffe were bearing small a neck and fore-limbs and were like horse .

But as they were living in places with no surface vegetation, they had to stretch their neck and fore-limbs to take the leaves for food, which resulted in the slight elongation of these parts .

This slight increase was inherited to the progeny and the process was repeated for many generations.

This example shows the better use of organs