Quick Answer: What Are The Differences Between R And K Strategists?

Are humans R or K?

Both across and within species, r and K strategists differ in a suite of correlated characteristics.

Humans are the most K of all.

K’s supposedly have a longer gestation period, a higher birthweight, a more delayed sexual maturation, a lower sex drive, and a longer life..

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.

Are dogs K or R strategists?

Indeed, one can think of a given organism as an “r-strategist” or a “K-strategist” only relative to some other organism; thus statements about r and K selection are invariably comparative. Cats and dogs are r-selected compared to humans, but K-selected compared to mice and rats.

What are the differences between R selected and K selected species?

r-selected babies grow rapidly, and tend to be found in less competitive, low quality environments. … K-selected species produce offspring that each have a higher probability of survival to maturity.

What is a feature of R selected species?

The production of numerous small offspring followed by exponential population growth is the defining characteristic of r-selected species. They require short gestation periods, mature quickly (and thus require little or no parental care), and possess short life spans.

Why are humans K selected species?

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.

Is yeast an R selected or K selected species?

Expert Answer Yeast is an r-selected because they indicate high biotic factor and produce many offspring within a short time.

What is the difference between a K and R strategist species quizlet?

r-selected species are more common in this environment, along with disturbed communities. K-selected species are more common in this environment. Largest number of individuals of a population that an environment can support.

What is K strategist?

K-selected species, also called K-strategist, species whose populations fluctuate at or near the carrying capacity (K) of the environment in which they reside. … Such species produce a few large young instead of many small young.

Are K selected species generalists or specialists?

When environmental conditions change, generalists are able to adapt, but specialists tend to fall victim to extinction much more easily. K-Selected species are species that have a low intrinsic growth rate, which causes the population to increase slowly until it reaches the carrying capacity of the environment.

What is the difference between R and K selective provide an example of AK specialist species and an R specialist species?

The difference between R and K selective is the R selected species live in populations that are highly variable. K selected species live in populations that are at or near equilibrium for long periods of times. An example of a K selective species would be a Lion or Bear and a R selective species would be a fish.

Are trees R or K strategists?

For instance, trees have traits such as longevity and strong competitiveness that characterise them as K-strategists. In reproduction, however, trees typically produce thousands of offspring and disperse them widely, traits characteristic of r-strategists.

Are frogs K strategists?

Frogs produce many eggs, and a fraction live to reproduce themselves. They are an example of r-strategists. “r and K selection.” University of Miami: Department of Biology.

What animals are r-strategists?

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.

Why r selected species tend to be opportunists?

Why do r-selected species tend to be opportunists? They reproduce and disperse rapidly when conditions are favorable or when disturbance opens up and a new habitat or niche for invasion. … They tend to reproduce later in life and have a small number of offspring with fairly long life spans.