ch6 population Assertation & Reasoning Questions Class 9th Social Science

Q1. Assertion: Population density indicates a lot about the status of a population in the habitat.

Reason: Absolute population density as well as relative population density serve equally well to find total number of individuals in a population for a given area

(a) Both A and R are true and R is the correct explanation of A.

(b) Both A and R are true but R is not the correct explanation of A.

(c) A is true but R is false.

(d) A is false but R is true

Q2. Assertion: Population density is sometimes measured in terms of biomass.
Reason: In certain cases, measuring the number of individuals to estimate the population density may underestimate the role of certain organisms.

(a) Both A and R are true and R is the correct explanation of A.

(b) Both A and R are true but R is not the correct explanation of A.

(c) A is true but R is false.

(d) A is false but R is true

Q3. Assertion: Population of a region does not change.

Reason: Birth rate, death rate and migration affect the population of a region.

OPTIONS

• Only Assertion is correct.
• Only Reason is correct. 
• Both Assertion and Reason correct and Reason is correct explanation of Assertion.
• Both Assertion and Reason correct but Reason is not the correct explanation of Assertion.