Question: Are Dandelions R-Selected Species?

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..

What is meant by R-selected species?

r-selected species are those that emphasize high growth rates, typically exploit less-crowded ecological niches, and produce many offspring, each of which has a relatively low probability of surviving to adulthood (i.e., high r, low K).

Are weeds R strategists?

R-strategists are species that have small bodies, rapid maturation, and fast growing populations. Examples of r-strategists are weeds, mosquitos and mice. …

Are Lions R or K-selected?

Common examples of k-strategists species include humans, lions and whales.

Are cats R strategists?

r selected species are also known as r strategists and opportunistic species. They practice big-bang reproduction, AKA semelparity. … Cats are r-selected compared to humans, and K-selected compared to cockroaches.

Are humans R or K strategists?

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.

Why are dandelions r-selected species?

Lesson Summary 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.

What characteristics do humans share with R-selected species?

Explanation: Species with r strategies are characterized by favoring a high population growth rate, The humans share this characteristic because the population increase has been exponential worldwide more than 7550 millions of habitants.

Why are invasive species R-selected?

Biologists characterize most invasive species as r-selected. … R-selected species often grow quickly and mature rapidly. Combined with their explosive reproductive potential, their quick growth and maturation allow them to colonize disturbed and early successional habitats remarkably well.

What are examples of R-selected species?

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.

Are plants r-selected or K-selected?

Even plants are capable of r- and K-selected reproductive strategies. Wind pollinated species produce much more pollin that insect pollinated ones, for example, because the pollin has to be carried at random by the wind to a receptive female flower….r- and K-selection.CharacteristicrKEarly mortalityhighlow7 more rows

Are bacteria R selected?

R-selected organisms, those emphasizing a fast growth rate, high number of offspring, include rabbits, bacteria, salmon, plants such as weeds and grasses, etc.