Answer
415.2k+ views
Hint: The theory of Lamarckism was given by a French naturalist Jean Baptiste de Lamarck. It is a theory of evolution which is based on the principle of physical changes occurring in an organism during its lifetime.
Complete Answer:
- The theory of Lamarckism is also known as inheritance of acquired characters. It was given by Jean Baptiste Lamarck. He also put forward several evolution theories. Lamarckism says that an organism can pass on to its offspring physical characteristics that the parent organism acquired through use or disuse during its lifetime.
- He put forward an example of a long neck in giraffes. He said that the ancestors of giraffes had small necks and forelimbs as those like horses. They were residing in places where food was not available on the surface. To get food they had to stretch their limbs and neck. This led to elongation of the parts. This acquired physical feature was transmitted to other generations and so on.
- Theory of natural selection was put forward by Darwin.
Thus, the correct answer is (D). Of stretching of necks over many generations by short necked ones.
Note: The traits are transferred from one generation to another by the help of genetic material according to Mendellian genetics. Thus theory of Lamarckism does not fully explain the inheritance of the acquired traits.
Complete Answer:
- The theory of Lamarckism is also known as inheritance of acquired characters. It was given by Jean Baptiste Lamarck. He also put forward several evolution theories. Lamarckism says that an organism can pass on to its offspring physical characteristics that the parent organism acquired through use or disuse during its lifetime.
- He put forward an example of a long neck in giraffes. He said that the ancestors of giraffes had small necks and forelimbs as those like horses. They were residing in places where food was not available on the surface. To get food they had to stretch their limbs and neck. This led to elongation of the parts. This acquired physical feature was transmitted to other generations and so on.
- Theory of natural selection was put forward by Darwin.
Thus, the correct answer is (D). Of stretching of necks over many generations by short necked ones.
Note: The traits are transferred from one generation to another by the help of genetic material according to Mendellian genetics. Thus theory of Lamarckism does not fully explain the inheritance of the acquired traits.
Recently Updated Pages
How many sigma and pi bonds are present in HCequiv class 11 chemistry CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Why Are Noble Gases NonReactive class 11 chemistry CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Let X and Y be the sets of all positive divisors of class 11 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Let x and y be 2 real numbers which satisfy the equations class 11 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Let x 4log 2sqrt 9k 1 + 7 and y dfrac132log 2sqrt5 class 11 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Let x22ax+b20 and x22bx+a20 be two equations Then the class 11 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Trending doubts
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
At which age domestication of animals started A Neolithic class 11 social science CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Which are the Top 10 Largest Countries of the World?
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Give 10 examples for herbs , shrubs , climbers , creepers
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Difference Between Plant Cell and Animal Cell
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Write a letter to the principal requesting him to grant class 10 english CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Change the following sentences into negative and interrogative class 10 english CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Fill in the blanks A 1 lakh ten thousand B 1 million class 9 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)