Tag: darwin's theory of evolution

Questions Related to darwin's theory of evolution

'Philosphie Zooligique' was written by -

zoology evolution of life darwin's theory of evolution process of evolution lamarckism

  1. De Vries

  2. Lamarck

  3. Mendel

  4. Spencer

Show answer
Correct Option: B
Explanation:
  • Philosphie Zooloigique was written by Lamarck.
So, the correct answer is 'Lamarck'

The use and disuse principle of evolution or theory of 'Inheritance of Acquired Characters' was proposed by

zoology evolution of life darwin's theory of evolution process of evolution lamarckism

  1. Hugo de Vires

  2. Lamarck

  3. Weismann

  4. Darwin

Show answer
Correct Option: B
Explanation:

The theory of inheritance of acquired characters was proposed by Jean Baptiste de Lamarck, French biologist in 1801. He states that organism gets adapted to the changes of environment, which it meets in lifetime and passes it on to progenies and thus becomes heredity. Thus, the correct answer is 'Lamarck.'

According to Lamarck, evolution is towards

zoology evolution of life darwin's theory of evolution process of evolution lamarckism

  1. Increase in size

  2. Decrease in size

  3. Both A and B

  4. Decrease in complexity

Show answer
Correct Option: A
Explanation:

Lamarckism is the theory of acquired characters, it includes :

  • Internal vital forces.
  • Effects of environment and new needs.
  • Use and disuse of organs.
  • Inheritance of acquired characters.

So, the correct option is 'Increase in size'.

Lamarck's theory of evolution is known as 

zoology evolution of life darwin's theory of evolution process of evolution lamarckism

  1. Natural selection

  2. Inheritance of acquired characters

  3. Survival of fittest

  4. Mutation theory

Show answer
Correct Option: B
Explanation:

Lamarck is best known for his Theory of Inheritance of Acquired Characteristics, first exhibited in 1801 (Darwin's first book - distributed in 1859): If a life form changes amid life so as to adjust to its condition, those progressions are passed on to its posterity.

So, the correct option is 'Inheritance of acquired characters'.

The first attempt to solve the problem of organic evolution was done by 

zoology evolution of life darwin's theory of evolution process of evolution lamarckism

  1. Mendel

  2. Haeckel

  3. Lamarck

  4. Darwin

Show answer
Correct Option: C
Explanation:

In early 19$^{th}$ century, Jean Baptiste de Lamarck, French zoologist suggested the first theory of organic evolution based on the development of new or modified character in response to environmental changes. For instance, giraffe acquired long neck due to stretching of the neck for food. Thus, the correct answer is ‘Lamarck.’

According Lamarckism long necked Giraffes evolved because :

zoology evolution of life darwin's theory of evolution process of evolution lamarckism

  1. Nature selected only long necked animals.

  2. Of stretching of necks by short one never many generations.

  3. Humans preferred long necked animals

  4. Mutation

Show answer
Correct Option: B
Explanation:

The ancestors of giraffe had short neck and shorter fore limbs. Due to change in the environmental condition they were forced to feed on taller trees. In order to reach to the food they had to stretch their neck and lift their fore limbs from the ground. This effort they made through out the life ,due to which their forelimbs and neck became slightly longer.

So, the correct answer is 'Of stretching of necks by short one never many generations'

Which one does not favour Lamarckian concept of inheritance of acquired characters?

zoology evolution of life darwin's theory of evolution process of evolution lamarckism

  1. Lack of pigment in cave dwellers

  2. Absence of limbs in snakes

  3. Presence of webbed toes in aquatic birds

  4. Melanisation of peppered moth in industrial areas

Show answer
Correct Option: D
Explanation:
Melanisation of peppered moth in industrial areas is an effect of natural selection, where due to change in environmental conditions, of the two moth forms that existed - the grey and black, the black was favored by natural selection over the grey, as the grey were easily spotted by its predator.
So, the correct answer is 'Melanisation of peppered moth in industrial areas'

Which cannot be explained by Lamarckism?

zoology evolution of life darwin's theory of evolution process of evolution lamarckism

  1. Loss of tail by humans

  2. Elongation of neck in Giraffe

  3. Weak progeny of a Nobel laureate

  4. None of the above

Show answer
Correct Option: C

Theory of use and disuse was propounded by :

zoology evolution of life darwin's theory of evolution process of evolution lamarckism

  1. Wallace

  2. Lamarck

  3. Darwin

  4. De Vries

Show answer
Correct Option: B
Explanation:

Jean Baptiste Lamark proposed the theory of use and disuse of organs.

The organs which are in constant use become better developed while the organs which are not used for long get reduced in size and become vestigial.
So, the correct answer is 'Lamarck'

Inheritance of acquired characters comes under _______.

zoology evolution of life darwin's theory of evolution process of evolution lamarckism

  1. Darwinism

  2. Neo Darwinism

  3. Lamarckism

  4. Neo Lamarckism

Show answer
Correct Option: C