Question

Consequences of population explosion were explained for the first time by
A) Darwin
B) De Vries
C) Lamarck
D) Malthus

Answer 1

Hint:Population explosion means the increase in number of people living in a particular area. Population explosion theory explains the relationship between the population growth and resources.

Complete answer:
Population of a place means the number of people living per unit area. Population is rising at an alarming rate. The population growth is in geometrical fashion. The theory for population explosion says that the population grows exponentially and the food chain grows arithmetically. The balance between the two can be established by positive and preventive checks.
Positive checks- These are the natural phenomena of nature like epidemic, famine, drought, floods to check the growth of population.Preventive checks include late marriage, self control, simple living.
This theory was put forward by Malthus. He proposed this theory in 1798 through his writings-“An essay on the Principle of Population”. He said that the population would double every 25 years. When the increase in population will be greater than the food supply, negative equilibrium would exist due to which people would die due to lack of food.
Darwin put forward the theory of evolution by natural selection.
De Vries- He put forward the theory of mutation.
Lamarck- He put forward the theory of inheritance of acquired characters.

The correct answer is (D). Consequences of population explosion were explained by Malthus.

Note:The limitation to the Malthus theory is that with the advancement in technology, food production has increased many folds. The food production rate has gone higher than the population growth rate.