R-selected organisms, those emphasizing a fast growth rate, high number of offspring, include rabbits, bacteria, salmon, plants such as weeds and grasses, etc.
Besides, which organism best represents an R selected species why?
The R in R-selected represents population growth rate. Dandelions are particularly good examples of R-selected traits because they have several of the physical characteristics associated with R-selected traits including: rapid development, small size, and short lifespan.
Similarly, which organisms would be most likely to be K selected? 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).
Likewise, people ask, what animals are r selected?
Typical examples of r-species are mice, rabbits, weeds and bacteria, which have a lot of offspring, but a short life expectancy. Examples of organisms undergoing K-selection are tortoises, elephants, people, and sequoia trees: their offspring are few but long-lived.
What is r selected and K selected species?
The two evolutionary “strategies” are termed r-selection, for those species that produce many “cheap” offspring and live in unstable environments and K-selection for those species that produce few “expensive” offspring and live in stable environments.
17 Related Question Answers Found
Are humans K strategists?
Organisms whose life history is subject to K-selection are often referred to as K-strategists or K-selected. Organisms with K-selected traits include large organisms such as elephants, humans, and whales, but also smaller, long-lived organisms such as Arctic terns, parrots and eagles.
Are humans K or R selected?
1 Answer. r/K selections is a theory that organisms either survive by r the rate of reproduction or K the level of care provided to offspring. Humans fall into the K part of the theory.
Is grass r selected?
R-selected species usually don’t care for offspring, whereas k-selected species such as orangutans will provide care (orangutan offspring live with their mothers for up to eight years). Examples include rabbits, bacteria, salmon, plants such as weeds and grasses, etc. For example, ants can be considered r-selected.
Are cats K strategists?
Animals such as fish and frogs that lay hundreds of eggs at a time are R-strategists, animals such as humans, puffins and the majority of other organisms are K-strategists. The image shown shows a cat, an example of a organisms that produces few long living organisms.
What does R Selected mean?
r selection selection occurring when a population is far below the carrying capacity of an unstable environment: tends to favor individuals that reproduce early, quickly, and in large numbers so as to make use of ephemeral resources and ensure that at least some offspring survive.
Are insects R selected?
Unlike K-selected species, members of this group are capable of reproduction at a relatively young age; however, many offspring die before they reach reproductive age. Examples of r-selected species include pest organisms, such as rodents, insects, and weeds.
Are dogs K strategists?
R-strategists, K-strategists and Survivorship curves: The reproductive adaptations of different organisms. Other organisms, like dogs, cats, insects, and fish show the complete opposite tendencies in reproduction. They breed once or twice in their lives, and have a huge number of offspring.
What are examples of K selected species?
Examples of K-selected species include birds, larger mammals (such as elephants, horses, and primates), and larger plants.
What does K selected mean?
K selection selection occurring when a population is at or near the carrying capacity of the environment, which is usually stable: tends to favor individuals that successfully compete for resources and produce few, slowly developing young, and results in a stable population of long-lived individuals.
Are frogs R selected?
Other examples of r-selected species include frogs, bacteria, and dandelions. R-selected species tend to produce a large number of offspring and include creatures such as frogs (eggs) or cockroaches. R-selected species produce so many offspring because it is not likely that many of them will survive.
Are bees R or K strategists?
In this way honey bees can be classified as both r and K, as they produce extremely large amounts of offspring but also take care of the offspring, even if it isn’t the mother directly responsible for the care. Cougars are an excellent example of an animal that relies on a K reproductive strategy.
Are turtles R strategists?
Green Sea Turtles are both r and k strategists. They are k strategists because they live for a really long time and they are r strategists because they have a ton of babies then don’t stick around to take care of them.
What does R stand for in r selected species?
rate
What is the difference between R vs K selection?
The r selected species live in populations that are highly variable. K selected species breed at a later age, so their generation time to grow from a small population to larger population is long. In K selected species, population size are often small, and therefore, individuals run a high risk of inbreeding.
Are Squirrels R selected or K selected?
Tree squirrels are K-selected compared to ground squirrels but rodents are r-selected compared to elephants, etc.
Why are humans K selected species?
They produce, during their life spans, fewer progeny, but place a greater investment in each. Their reproductive strategy is to grow slowly, live close to the carrying capacity of their habitat and produce a few progeny each with a high probability of survival. Typical K-selected organisms are elephants, and humans.
What is R strategist?
In few words, R and K-strategists are approach for reproductive and growth of organisms. Some organisms are r-strategists, which means they consume the substrate quickly and produce high percentage of offspring and they end their life cycle in short span of time.