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महाराष्ट्र राज्य शिक्षण मंडळएचएससी विज्ञान (सामान्य) इयत्ता १२ वी

List any three drawbacks of Darwinism.

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प्रश्न

List any three drawbacks of Darwinism.

Mention any four drawbacks of Darwinism.

दीर्घउत्तर
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उत्तर

The following are the drawbacks of Darwinism: 

  1. Darwin could not explain the origin of variations or how they arise. He failed to distinguish between environmental and hereditary variations.
  2. Darwin did not differentiate between somatic and germinal variations. He mistakenly considered all variations as heritable.
  3. Darwin’s theory lacked clarity on how new characters arose or how the “arrival of the fittest” occurred. He didn’t explain how advantageous traits were inherited.
  4. Darwin believed in gradual evolution, but he didn’t recognize intermediate forms. He also couldn’t explain species extinction or vestigial organs.
  5. Darwin couldn’t explain neutral traits or hybrid sterility. He also overlooked the hindrance caused by over-specialized organs like tusks and antlers.
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Notes

Students should refer to the answer according to their question and preferred marks.

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पाठ 7: Evidences and Theories of Biological Evolution - BOARD EXAMINATION QUESTIONS [पृष्ठ ३५०]

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नूतन Biology [English] Class 12 ISC
पाठ 7 Evidences and Theories of Biological Evolution
BOARD EXAMINATION QUESTIONS | Q 25. | पृष्ठ ३५०

व्हिडिओ ट्यूटोरियलVIEW ALL [1]

संबंधित प्रश्‍न

Give the principles of Darwin's theory of natural selection.


Explain the phenomenon that is well represented by Darwin's finches other than natural selection.


All organisms produce more young ones. Comment


Answer each question in ‘One’ sentence only: 

Identify which one of the following is a test cross. 


Given alongside are two figures (A and B) showing a phenomenon that was first observed in Manchester before and after the year 1850.

Answer the following:

  1. What name has been given to this phenomenon?
  2. Give the common name and the scientific name of the insect involved in this phenomenon.
  3. Briefly mention why the changes shown in the two figures appeared.
  4. The following phenomenon provides a classical explanation of a scientific theory given by a certain scientist.
    1. Name and explain the said theory.
    2. Give the name of the scientist who gave this theory.

Explain the evolution of the long neck of giraffe according to Charles Darwin. 


The theory of natural selection for evolution was proposed by ______.


Natural selection is a driving force for evolution-How?


Which concept was not included in Charles Darwin’s theory of Natural Selection?


Wild cabbage has evolved into new varieties like cabbage, broccoli, and cauliflower by ______  


Select the correct statement.


Which of the following sequences fits into the organic evolution theory proposed by Charles Darwin and Alfred Wallace?


The ship on which Darwin was appointed as Naturalist was:


According to Darwin, two different areas within a continent have different species because they have different:


Theory of natural selection dwells on:


What are the key concepts in the evolution theory of Darwin?


Write drawbacks of Darwin's theory


Define the following term:

Natural selection


Match the name of the scientist in Column I with the name of the theory in Column II.

  Column (I)   Column (II)
i. August Weisman a. Theory of origin of species
ii. Hugo de Vries b. Theory of chemical evolution
iii. Charles Darwin c. Theory of continuity of germplasm
iv. Oparin Haldane d. Mutation theory

Choose the correct option.


DDT resistant mosquitoes and different break sizes of African seed cracker finches show ______ type of selection respectively.


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