Question

Choose the correct combination among the following:

S. No	Column I	Column II	Column III
I	Thomas Malthus	Principles of population	Phenomenon of gradualism
II	Paul Kammarer	Proteus anguinus	Inheritance of somatic character
III	Hugo de Vries	Oenothera lamarckiana	Synthetic theory of evolution
IV	Bernard Keltewell	Biston betularia	Industrial melanism

• A. I, IV
• B. II, IV
• C. I, III
• D. II, III

Answer 1

The correct option is A I, IV

The concept that population tends to increase geometrically while food supply increases arithmetically were put forward by Thomas Malthus. Malthus published a book stating that populations with unlimited natural resources grow very rapidly, after which population growth decreases as resources become depleted.

Kammerer aims to explain how offspring inherit traits from their parents. He worked on the inheritance of acquired character.

Hugo de Vries gave mutation theory and felt the importance of chance events i.e., mutations during evolution. He observed mutations in Oenothera Lamarckiana.

Bernard Keltewell studied the industrial melanism on Biston betularia (peppered moth).

Thus, the correct answer is option A.