Chapter 5, Problem 3STP

Summary Introduction

Introduction:

The removal or termination of an organism or a group of organisms is termed as extinction. The extinction actually occurs when the last individual of the species die and there is no further chance of reproduction of more organisms of this species.

Answer to Problem 3STP

Correct option is, option (D) a fatal disease affecting a single population.

Explanation of Solution

Explanation for correct options:

(D) a fatal disease affecting a single population. If a fatal disease affects a population, then in some time only many organisms in that population will die. This leads to extinction of many species quickly. Hence, option (D) is correct.

Explanation for incorrect options:

(A) destruction of a native animal’s habitat as humans populate the island. It is an example of habitat destruction. It is the event when a habitat becomes incapable of supporting the species, leading to their extinction. Habitat destruction is a part of background extinction. Hence, option (A) is incorrect.

(B) increasing industrialisation and human influence over time. This can lead to species extinction but with a very slow pace. Hence, option (B) is incorrect

(C) introduction of non native animal into the environment. This may or may not lead to species extinction. Hence, option (D) is incorrect