NEET BIOLOGY

Detailed explanation-1: -The selection of better-suited organisms to the environment will have a higher chance of survival and adapt to utilize the resources left available. With fewer resources, the competition among species decreases as there won’t be competitors available. Therefore, option C is correct.

Detailed explanation-2: -Another mechanism for avoiding competitive exclusion is to adopt alternative life history and dispersal strategies, which are usually reinforced through natural selection. This mechanism reduces competitive interactions and increases opportunities for new colonization and nutrient acquisition.

Detailed explanation-3: -Interspecific competition means that resources have to be shared between the different species so there will be less available to both. This means both species will have less energy for growth and reproduction, so population numbers of both species will decrease.

Detailed explanation-4: -“Summing” It All Up. Overall, population grows or shrinks through two very basic components – natural change (births minus deaths) and migration (domestic plus international).

Detailed explanation-5: -Which of the following would cause a decrease in population size? emigration and increased death rate.