Question

Choose the most appropriate alternatives from amongst the following:

Which of the following animal was used to explain the idea of 'use' in one of the theories of evolution?

• A. Camel
• B. Giraffe
• C. Monkey
• D. Dog

Answer 1

The correct option is B

Giraffe

The correct option is B.

Explanation of the correct option:

1. Lamarck gave the example of the long neck of a giraffe to prove the effect of use of organs.
2. Giraffes initially had small necks as they lived in arid African deserts and fed on small herbs.
3. As the vegetation in the desert declined, they started feeding the leaves of trees.
4. They gradually moved to taller trees to eat the leaves by stretching their necks.
5. As a result of extensive stretching over generations, giraffes developed such a long neck.

Explanation of the incorrect options:

Option A: Camel was not cited as an example of the use of organs by Lamarck.

Option C: Monkey is not a suitable example in this case.

Option D: Dog is not the appropriate example and was not cited by Lamarck.

Hence, the use of organs was described in giraffe.