For a situation when food and space for a population are unlimited, which of the following statements given below represent incorrect features?

There are more competition among themself.

The incorrect feature is: (d) IV. There is more competition among themselves.

Explanation:

I. Each species has the ability to realize fully its inherited potential to grow. This statement is incorrect. Even when food and space are unlimited, species may not fully realize their inherited potential to grow due to other limiting factors such as predation, disease, or physiological constraints.

II. Then, it is equal to dN/dt = rN. This statement is correct. In a situation with unlimited food and space, the population growth rate (dN/dt) is equal to the intrinsic rate of increase (r) multiplied by the population size (N). This represents exponential growth.

III. It is described by a J-shaped curve. This statement is correct. A J-shaped curve represents exponential growth, which occurs when resources are unlimited. In a situation of unlimited food and space, the population would continue to grow exponentially without any leveling off.

IV. There is more competition among themselves. This statement is incorrect. In a situation with unlimited food and space, there would be less competition among individuals of the same species since resources are abundant. Competition becomes more significant when resources become limited and individuals must compete for access to those resources.

Therefore, the correct option is (d) IV, as it incorrectly suggests more competition among individuals in a situation of unlimited food and space.