Are Jellyfish K strategists?
Jellyfish demonstrate k strategy during reproduction. While moon jellyfish lay up to 15 eggs at a time, most jellyfish only lay 1 marble like egg. Because of overfishing, these single marble like eggs can survive and produce more offspring in the future, creating generations causing the population boom.
Are mosquitoes K or R-selected?
K-selected species possess relatively stable populations fluctuating near the carrying capacity of the environment. R-selected species can include mosquitos, mice, and bacteria.
What kind of organisms are r strategists?
Organisms whose life history is subject to r-selection are often referred to as r-strategists or r-selected. Organisms that exhibit r-selected traits can range from bacteria and diatoms, to insects and grasses, to various semelparous cephalopods and small mammals, particularly rodents.
Are spiders R or K strategists?
Arthropods like insects, spiders, and crustaceans are also R-selected. Even some small mammals employ R-selection.
Do r-selected species live long?
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.
Are dogs K or R strategists?
Examples of r-strategist species are dogs, cats, insects, and fish.
What does R stand for in r-selected species?
reproduction
Are cats r-selected species?
Cats and dogs are r-selected compared to humans, but K-selected compared to mice and rats. Mice and rats, in turn, are K-selected compared to most insects.
Are frogs R strategists?
Frogs produce many eggs, and a fraction live to reproduce themselves. They are an example of r-strategists.
Why are frogs r-selected species?
Frogs have been selected by stable, predictable environments, therefore they do not feel the need to care for their offspring like wolves. b. Frogs use very little energy to produce large numbers of offspring, therefore they do not have enough remaining to nurture them.
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.
Why are frogs R-selected?
Which technique is used is often a reflection of the stability of the environment in which the animal lives. According to r/K selection, unstable conditions should favour r-selected species because they have the ability to produce large numbers of young quickly, allowing the population to rapidly recover from a crash.
Is R-selected logistic growth?
R-selected species tend to have exponential growth that looks like a J when drawn on the graph because the population grows very quickly. The logistic growth of K-selected species creates an S or sigmoidal shape on the graph, as the population eventually levels out due to limited resources and space.
What species are both R and K-selected?
Oak trees produce many offspring that do not receive parental care, but are considered K-selected species based on longevity and late maturation. (b) Dandelions and jellyfish are both considered r-selected species as they mature early, have short lifespans, and produce many offspring that receive no parental care.
What is the difference between R and K strategies?
The key difference between r strategist and K strategist is that the r strategist lives in unstable and unpredictable environments while the K strategist lives in more stable environment. Because of this environmental conditions, the r strategists produce many offspring while the K strategists produce few offsprings.
What is r at carrying capacity?
In the equations describing growth of populations of organisms, r represents the slope of the line representing exponential growth. The letter K represents the carrying capacity of a habitat for members of a given sort of organism.
Which survivorship applies to humans?
Examples of populations with Type I survivorship include humans in developed countries and animals in zoos. A lot of effort is invested in each individual, resulting in high survivorship throughout the life cycle: Most individuals die of old age.
What are the 3 types of survivorship?
There are three types of survivorship curves, and they are simply referred to as type I, type II, and type III. A type I survivorship curve shows individuals that have a high probability of surviving through early and middle life but have a rapid decline in the number of individuals surviving into late life.