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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

Explain Darwinian theory of evolution with the help of one suitable example.


Explain the interpretation of Charles Darwin when he observed a variety of smallblack birds on Galapagos Islands.


Name and define the three types of natural selection.


Briefly discuss the Theory of Natural Selection as given by Darwin.


Given below 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. 


Answer the following question.
Explain ‘fitness of a species’’ as mentioned by Darwin.


Natural selection is called ‘survival of the fittest. Which of the following statements best describes an organism?


A basket of vegetables contains carrot, potato, radish and tomato.
Which of them represent the correct homologous structures?


Select the correct statement.


Study the following cross and showing self pollination in F1, fill in the blank and answer the question that follows

Parents RRYY × rryy
  Round, Yellow   wrinkled, green
F1- Rr Yy × ?
  Round, yellow    

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


Theory of natural selection dwells on:


Nature has a way of causing organisms that inherit advantageous traits to survive and reproduce more successfully than the ones that do not. This process is known as ______.


Industrial melanism was highlighted by ______.


The famous book "The Origin of Species" was written by ______.


Define the following term:

Speciation


In which year did Darwin explain his theory (Darwinism) in his famous book, Origin of Species by Natural Selection?


The book Principles of Geology, which heavily influenced Darwin's views on organic evolution, was written by:


Alfred Russel Wallace independently arrived at the same conclusions as Darwin while studying the fauna of which region?


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