Question: Are Plants R Or K Strategists?

What does R stand for in r-selected species?

A whale tends for a single calf.

r-selection: On one extreme are the species that are highly r-selected.

r is for reproduction.

Such a species puts only a small investment of resources into each offspring, but produces many such low effort babies..

Are frogs K strategists?

Frogs produce many eggs, and a fraction live to reproduce themselves. They are an example of r-strategists. “r and K selection.” University of Miami: Department of Biology.

What are characteristics 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.

Why are rabbits r-selected species?

So this begs the question are rabbits truly prolific, and why? In Page 2 the 1960s two ecologists came up with r/K selection theory. It relates to parental investment and reproductive strategies adopted by species in order to advance its kind into the future. … And they have the ability to reproduce rapidly.

Why are r-selected species opportunists?

Why do r-selected species tend to be opportunists? They reproduce and disperse rapidly when conditions are favorable or when disturbance opens up and a new habitat or niche for invasion. … They tend to reproduce later in life and have a small number of offspring with fairly long life spans.

What does R stand for in ecology?

The first variable is r (the intrinsic rate of natural increase in population size, density independent) and the second variable is K (the carrying capacity of a population, density dependent).

Are trees R or K strategists?

For instance, trees have traits such as longevity and strong competitiveness that characterise them as K-strategists. In reproduction, however, trees typically produce thousands of offspring and disperse them widely, traits characteristic of r-strategists.

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 Squirrels K-selected or R-selected?

Tree squirrels are K-selected compared to ground squirrels but rodents are r-selected compared to elephants, etc.

What are examples of K strategists?

Common examples of k-strategists species include humans, lions and whales….Characteristics of k-strategistsOccasional breeding.Longer gestation periods and give birth to one or two offspring at a time.Offspring take time to grow, and do so under the constant care and supervision of their parents.More items…•Jul 30, 2018

Are dogs 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.

Are cats K strategists?

Animals such as fish and frogs that lay hundreds of eggs at a time are R-strategists, animals such as humans, puffins and the majority of other organisms are K-strategists. The image shown shows a cat, an example of a organisms that produces few long living organisms.

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.

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.

What are 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 minnows R-strategists?

Select from the following list the species that are r-strategists: minnow, giraffe, human, beetle, bacteria, eagle, and cougar. Minnow,beetle and bacteria because they all have short lifespans and focus on quick reproduction.

How do R strategists and K strategists differ?

K-strategists, on the other hand occupy more stable environments. They are larger in size and have longer life expectancies….K and r Reproductive Strategies.Characteristics of r- and K-selected organismsr-organismsK-organismshave large littershave small littersreproduce at an early agereproduce at a late agefast maturationslow maturation9 more rows

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.

Are trees K-selected species?

Examples of K-selected species are primates including humans, other mammals such as elephants, and plants such as oak trees. … The tree’s height and size allow it to dominate other plants in the competition for sunlight, the oak’s primary energy resource.