Question

Which of the following statement is not correct about K-selection?
(A) Having long life span
(B) Developed interspecific competition
(C) very stable population
(D) having short generation time

Answer 1

Hint: There are two different types of selection existing in our ecology that is there are two kinds of selected species that is R-selected specie and K-selected specie. This division is mainly made on the basis of number of organisms produced during one sexual cycle and how much among them survive.

Complete Step by Step Answer:
Population fluctuations for K-selected species are generally close to the carrying capacity of the habitat. These animals are distinguished by producing few young while providing extensive parental care. Bison, elephants, and people are all k-selected species. Species whose populations vary at or close to the carrying capacity (K) of the habitat in which they live are known as K-selected species, also known as K-strategist species.

The term "r-selected species" refers to species whose numbers are controlled by their biotic potential (maximum reproductive capacity, r). One of the two generalized life-history methods is represented by such animals. The species with a high level of r-selection are at one extreme. "R" stands for reproduction. The progeny of this species receives only a modest expenditure of resources, but they are produced in large numbers. Additionally, such species typically do not put much effort into raising or preserving their young.

The population size of k-selected species grows exponentially up to the niche's carrying capacity only. For optimal embryological development, these species have longer gestation periods and a smaller number of large progeny.

So, option (D) is correct.

Note: Invasive species often have a negative impact on K-selected species more than they do on r-selected species. K-selected species share several characteristics. They typically are big. Through the colonization-competition trade-off, R- and K-selection limit the range of viable species, with strong r-selection favoring colonizers and strong K-selection favoring competitors. However, the degree of disturbance also influences the success of species.