Question

Theory of use and disuse was propounded by.
A. Wallace
B. Lamarck
C. Darwin
D. De Vries

Answer 1

Hint: The theory of use and disuse was propounded by one of the scientists who provided the information about the classification of invertebrates in his book and he is the one who coined the term invertebrates.

Complete answer:
Lamarckism, an evolution theory focused on the idea that physical improvements in species may be transferred to their offspring over their lifetimes – such as grater organ production or a portion of increased use.
Lamarckism, or Lamarckian inheritance, also known as “Neo-Lamarckism,” is the notion that an organism can pass on the physical characteristics to its offspring that the parent organism acquired during its lifetime through use or disuse. This principal is often referred to as the inheritance of inherited traits or soft inheritance. In animals, a new world brings out new needs and by making some effort the animals try to fulfill them. For instance is the giraffe, trying to browse and higher and higher on the leaves of trees it feeds on, stretches out his neck. Because of this habit, which persisted for a long time in all of these species individuals, the front limbs and neck of the giraffe gradually grew longer.
It is named inaccurately after the French biologist Lamarck, who introduced the soft inheritance behavior into his evolutionary theories as a complement to his idea of orthogenesis, a move toward complexity.
Lamarck did not originate the concept of soft inheritance, known from the classical era onwards, and it was not the primary focus of Lamarck’s theory of evolution. Furthermore, Charles Darwin accepted the concept of “use and disuse inheritance” in On the Origin of Species (1859).

So, the correct answer is B(Lamarck).

Note: There are shreds of evidence to prove that Lamarck’s theory is false. For many consecutive generations, Weismann cut off the mice’s tail without creating a tailless type i.e. the offspring of mice with cut tails is not inherited.