NEET BIOLOGY

Detailed explanation-1: -Solution : [c] Exponential or log phase cannot sustain for longer period because the nutrients and space are limited and there is competition as well. Microorganisms, when nutrients get exhausted, secrete toxic chemicals which inhibit the growth of other organisms.

Detailed explanation-2: -In the real world, exponential growth can’t carry on indefinitely. Nevertheless, it is often a good match for things that happen in the real world.

Detailed explanation-3: -In reality, there is simply not enough space or resources for natural populations to continue to grow unchecked. Limiting factors within every ecosystem, such as the availability of food or the effects of predation and disease, prevent a population from becoming too large.

Detailed explanation-4: -In most natural populations rapid exponential growth is unsustainable. As populations increase, environmental resistance causes the growth rate to slow down, until carrying capacity is reached.