NEET BIOLOGY

Detailed explanation-1: -Key points. In nature, population size and growth are limited by many factors. Some are density-dependent, while others are density-independent. Density-dependent limiting factors cause a population’s per capita growth rate to change-typically, to drop-with increasing population density.

Detailed explanation-2: -Resource shortages triggered by increasing population size are density-independent limiting factors.

Detailed explanation-3: -The density dependent factors are factors whose effects on the size or growth of the population vary with the population density. There are many types of density dependent limiting factors such as; availability of food, predation, disease, and migration. However the main factor is the availability of food.

Detailed explanation-4: -Wildfire is abiotic (nonliving), and most density-independent limiting factors fall in this category. Other density-independent factors include hurricanes, pollutants, and seasonal climate extremes.