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Maharashtra State BoardSSC (English Medium) 10th Standard

Write short notes based upon the information known to you. Lamarckism - Science and Technology 2

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Question

Write short notes based upon the information known to you.

Lamarckism

Short/Brief Note
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Solution

  1. Lamarck gave the principle of 'use or disuse of organs. He proposed that the reason behind evolution was the changes in the morphological activities of the organism.
  2. For example, a giraffe has a long neck because it used to browse on leaves of tall plants by extending their neck for several generations; the shoulders of an ironsmith are strong due to repetitive hammering movements; the wings of an ostrich and emu are weak because they are not used for flying; and the legs of birds and swans are used for swimming because they live in water.
  3. These characters are termed as acquired characters, which are transferred from one generation to another.
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Chapter 1: Heredity and Evolution - Exercises [Page 11]

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Balbharati Science and Technology 2 [English] Standard 10 Maharashtra State Board
Chapter 1 Heredity and Evolution
Exercises | Q 4.1 | Page 11

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