NEET BIOLOGY

Detailed explanation-1: -K-selected species produce offspring that each have a higher probability of survival to maturity. Although not always the case, K-selection is more common in larger animals, like whales or elephants, with longer lifespans and overlapping generations. The young tend to be altricial (immature, requiring extensive care).

Detailed explanation-2: -Elephants, humans, and bison are all k-selected species. On the other hand, r-selected species often inhabit unstable environments and are completely density independent. These species often have short life expectancies, produce as many offspring as they can, and invest very low amounts of parental care.

Detailed explanation-3: -A bald eagle, an individual of a typical K-strategist species. K-strategists have longer life expectancies, produce fewer offspring and tend to be altricial, requiring extensive care by parents when young.

Detailed explanation-4: -K-selected species are characterized by long gestation periods lasting several months, slow maturation (and thus extended parental care), and long life spans. In addition, they tend to inhabit relatively stable biological communities, such as late-successional or climax forests (see ecological succession).

Detailed explanation-5: -R-selected species are influenced heavily by intrinsic growth rates ("r"), or the maximum population growth rate, and exhibit large increases followed by large decreases in population numbers. K-selected species are controlled more by carrying capacity ("K") and tend to display more stable populations.