NEET BIOLOGY

ECOLOGY

ECOSYSTEM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Long life span
A
K-selected
B
r-selected
C
Either A or B
D
None of the above
Explanation: 

Detailed explanation-1: -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-2: -K-Selected Traits Parents spend a large amount of time and energy raising their young and thus may have long stretches of time before breeding again which decreases juvenile mortality but stunts birth rates. K-selected species live long lives.

Detailed explanation-3: -(K-selected species), usually have a Type I survivorship curve. This relatively flat curve reflects low juvenile mortality, with most individuals living to old age. A constant probability of dying at any age, shown by the Type II survivorship curve, is evident as a straight line with a constant slope that…

Detailed explanation-4: -K-selected species possess relatively stable populations fluctuating near the carrying capacity of the environment. These species are characterized by having only a few offspring but investing high amounts of parental care. Elephants, humans, and bison are all k-selected species.

Detailed explanation-5: -Similarly, reptiles such as sea turtles display both r-and K-traits: although sea turtles are large organisms with long lifespans (provided they reach adulthood), they produce large numbers of unnurtured offspring.

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