What is the difference in reproductive strategies between R and K?
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 the difference between a K and R strategist species?
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 are the two types of reproductive strategies?
There are two forms of reproduction: asexual and sexual.
What are some examples of K strategies?
Examples of K-selected species include birds, larger mammals (such as elephants, horses, and primates), and larger plants.
What are the main difference between K selected and R selected?
The r selected species live in populations that are highly variable. The fittest individuals in these environments have many offspring and reproduce early. K selected species live in populations that are at or near equilibrium conditions for long periods of time.
What are the main difference between K-selected and r-selected?
How do R and K selection influence survivorship curves?
How do survivorship curves relate to r selection and K selection in animals. Ans: Populations described as r selection have traits that contribute to a high population growth rate. K selection maximizes the chance of surviving in an environment where the number of individuals is near the carrying capacity.
What are R 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). A typical r species is the dandelion (genus Taraxacum).
What does R and K mean for population growth?
r, which is the growth rate of the population (how quickly or slowly it changes size) N, which is the number of individuals in that population; and finally. K, which is the carrying capacity, the maximum number of individuals that can be supported by the resources in a given area.
What is R strategy in biology?
r-selected species, also called r-strategist, species whose populations are governed by their biotic potential (maximum reproductive capacity, r). The production of numerous small offspring followed by exponential population growth is the defining characteristic of r-selected species.
Which of the following is an example of an R-strategist?
Examples of r-strategist species are dogs, cats, insects, and fish.
Which is better a k or A R reproductive strategy?
K and r Reproductive Strategies. They are larger in size and have longer life expectancies. They are stronger or are better protected and generally are more energy efficient. They produce, during their life spans, fewer progeny, but place a greater investment in each. Their reproductive strategy is to grow slowly,…
Are there any fish that are k or are selected?
Among the fishes, most, like the salmon, are r-selected. Some species will even inadvertently eat their own young if they are not immediately dispersed, but a few species, such as the cichlids, are K-selected and provide prolonged care and protection of the eggs and hatchlings.
Are there organisms that neither fit the K or are strategist curve?
Other factors also control survivorship of species, and the r/k selection theory is now obsolete. In between, there are some organisms like birds, mice, rabbits, butterflies, etc. that neither fit the k-, or r-strategist type of survival. They lie in a zone where their chances of survival remain the same throughout their lifespan.
Which is the best description of are / K selection theory?
r / K selection theory. In ecology, r/K selection theory relates to the selection of combinations of traits in an organism that trade off between quantity and quality of offspring. The focus on either an increased quantity of offspring at the expense of individual parental investment of r-strategists, or on a reduced quantity…