Question

Explain in brief - Lamarck’s principle of ‘use or disuse of organs’.
b) Give two examples.
c) What are ‘acquired characters’?

Answer 1

Here's the answer.

Good luck!

Answer 2

"Jean Baptize Lamarck set forth the rule of utilization or neglect of organs.

As per him, the morphological changes are in charge of advancement and the exercises or lethargy of the creatures are in charge of those morphological changes.

Models - 1. The neck of giraffe has turned out to be long because of perusing on leaves of tall trees

2. The shoulders of ironsmith have turned out to be solid because of consistent pounding development

3. The wings of feathered creatures like emu, ostrich have turned out to be frail because of no utilization by any means.

All these are instances of procured characters which are exchanged starting with one age then onto the next age. This is called Lamarckism.

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