Which of the following is a K-selected species?

Which of the following is a K-selected species?

Elephants, humans, and bison are all k-selected species. On the other hand, r-selected species often inhabit unstable environments and are completely density independent. These species often have short life expectancies, produce as many offspring as they can, and invest very low amounts of parental care.

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).

What factors are shared among K-selected species?

There are numerous K-selected traits, including:

  • Slow development.
  • Low reproductive rate.
  • Late reproductive age.
  • Large body size.
  • Multiple reproductive cycles.
  • Long lifespan.
  • Strong competitive ability.
  • Low offspring mortality.

Do k-selected species experience exponential growth?

A population of K-selected species may start out with exponential growth, but at some point, resources become a limiting factor, and population growth will slow down and eventually level off. This logistic growth creates an S shaped or sigmoidal curve on the graph.

What are characteristics of R-selected populations?

These characteristics describe R-selected species perfectly:

  • Rapid development.
  • High reproductive rate.
  • Early reproductive age.
  • Small body size.
  • One reproductive cycle.
  • Short lifespan.
  • Poor competitive ability.
  • High mortality of offspring.

What do R and K strategists have in common?

K-strategists, on the other hand occupy more stable environments….K and r Reproductive Strategies.

Characteristics of r- and K-selected organisms
r-organisms K-organisms
have large litters have small litters
reproduce at an early age reproduce at a late age
fast maturation slow maturation

Why are rabbits R strategists?

In r and K selection theory, the rabbit is known as an r-strategist. R-strategists often live in unstable environments, so there’s little chance that their offspring would survive into adulthood. To solve this problem, r-strategists produce a ton of cheap offspring.

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.

Are K-selected species opportunists?

Explanation: R-selected or opportunistic species are species that have high growth rates, produce many offspring, and have low survival odds for those many offspring. Examples of k-selected species include mammals such as humans, dolphins, and rhinos.

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.

Is yeast an R strategist?

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 rabbits R or K strategists?

And yes rabbits. So if someone says a family breeds like rabbits that would be a “r” strategy – except in scientific terms people are K strategists. Conversely, K-selected species live in densities close to carrying capacity and are strong competitors with greater ability to be successful in adulthood.

Are K-selected species generalists?

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.

Why are oak trees K-selected species?

The tree’s height and size allow it to dominate other plants in the competition for sunlight, the oak’s primary energy resource. Furthermore, when it does reproduce, the oak produces large, energy-rich seeds that use their energy reserve to become quickly established (K-selection).

Are dogs K or R strategists?

Examples of r-strategist species are dogs, cats, insects, and fish.

What are the differences between R and K strategists?

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.

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