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Are lizards R or K-selected species?
Members of squamate (large lizards and snakes) and Cricetidae (a rodent family) tend to fall more towards the r-selected side of the scale, therefore, the number of offspring plays a large role in the population size. It is also important to note that evolution is what caused species to be r-selected or K-selected.
What animals are 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.
r and K selection | Ecology
Images related to the topicr and K selection | Ecology
What is an example of a 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.
Are turtles R or K-selected?
Similarly, reptiles such as sea turtles display both r- and K-traits: although large organisms with long lifespans (should they reach adulthood), they produce large numbers of unnurtured offspring.
What are K and R species?
K-selected species possess relatively stable populations and tend to produce relatively low numbers of offspring; however, individual offspring tend to be quite large in comparison with r-selected species.
Are cats R or K 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.
Which of the following is an R selected species?
R-selected species are those that produce many offspring that have a lower probability of surviving to adulthood. Typical examples of these species include mice and rabbits, and all species of Texas quail fall within this classification.
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r and K selection
You can see r- and K-selected strategies clearly by looking at different organisms within a phylogenetic group, such as the mammals.
r/K selection theory – Wikipedia
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.
R and K selected species – A young naturalist
R-selected species include insects, amphibians, many fish, and reptiles. They tend to be smaller organisms, so the energy used to make each …
r/K Selection Theory – Biology | Socratic
Reptiles and turtles have both r and K while male humans have r and females have K. It is thought that K species will replace r species in what is called a …
Which of the following is an R strategist?
Insects produce a large number of offsprings and fall in the category of r strategist. Thus, the correct answer is B, Insects.
Which organisms would be most likely to be K-selected?
K selected organisms produce few offspring but invest a lot of energy in them, and examples would include whales, primates (which includes humans), elephants, and some birds, like arctic terns. This is opposed to r selected species, which produce a lot of offspring but tend to invest relatively little energy in them.
Are Crocodiles K-selected?
Some reptiles, like alligators and crocodiles, are also K-selected, living for a long time and laying eggs multiple times. Some even provide early parental care over their eggs and offspring.
Which organism is most likely to be part of an R-selected species?
R-selected organisms, those emphasizing a fast growth rate, high number of offspring, include rabbits, bacteria, salmon, plants such as weeds and grasses, etc.
r and K selection
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What are r-selected species quizlet?
r-Selected Species. Early reproductive age. r-Selected Species. Most offspring will die before they reach the reproductive age.
Are tortoises K-selected?
Examples of organisms undergoing K-selection are tortoises, elephants, people, and sequoia trees: their offspring are few but long-lived. In summary, r-selection is selection for quantity, K-selection for quality of offspring.
Are dandelions r-selected species?
Examples of r-selected species are marine invertebrates, such as jellyfish, and plants, such as the dandelion. Dandelions have small seeds that are dispersed long distances by wind; many seeds are produced simultaneously to ensure that at least some of them reach a hospitable environment.
What is an R strategist and K strategist?
r strategist is an organism living in unstable environments. Hence, they undergo rapid reproduction to stabilize themselves. Whereas, K strategist is an organism living in stable environments. Therefore, they are high in population and do not need to undergo rapid reproduction.
Which of the following is a typical K-selected species adaptation?
Which of the following is a typical K-selected species’ adaptation? K-selected species have a low biotic potential but high survivorship in part because of extended care for their young.
Which example best illustrates a Semelparous K-selected species?
Which example best illustrates a semelparous, K-selected species? Locusts (grasshoppers in the family Acrididae) undergo cyclic population outbreaks, leading to massive swarms.
Are gorillas K-selected species?
Examples of animals that pursue K strategies are gorillas and whales. The largest of the primates, gorillas require specialized diets (with distinct differences in the diets of mountain and lowland gorillas) and produce a single offspring once every three to four years.
Are spiders R strategists?
Spiders are considered r-selected species because they can reproduce thousands of eggs at a time, but most live a short life.
Are pioneer species R or K-selected?
Answer and Explanation: Pioneer species are most commonly R-selected species. This means that they have shorter lifespans, tend to be smaller plants, and usually produce multiple offspring.
What is the difference between R and K selective?
…
r- and K-selection.
| Characteristic | r | K |
|---|---|---|
| Size of offspring | small | large |
| Independence at birth | early | late |
| Ability to learn | low | high |
| Lifespan | short | long |
K selected and r selected population growth strategies | AP Environmental science | Khan Academy
Images related to the topicK selected and r selected population growth strategies | AP Environmental science | Khan Academy
Are bacteria K strategists?
Thus at nearly every point, bacterial cells incorporated into biofilms appear to behave as K-strategists (see figure 4).
Which is not the characteristics of R-selected species Mcq?
Which is not the characteristic of ‘r’ selected species? The correct answer is – 2. Parental care.
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