In the context of India’s population distribution, the term physiological density refers to population per _____.

Correct option is A

The correct answer is (A) unit of arable land

Explanation:

• Physiological density refers to the number of people living per unit of arable land (land suitable for agriculture).
• It is an important measure used to understand the pressure of the population on the land that is capable of supporting agricultural activities.
• A higher physiological density indicates that a large population is dependent on a relatively small amount of arable land, which could indicate greater challenges for food production and land use.

Information Booster:

• Physiological density is calculated by dividing the total population of an area by the amount of arable land in that area.
• It differs from arithmetic density, which measures the number of people per unit of total land area, not considering whether the land is arable or not.