Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Why doesn’t a frog, which is an r-selected species, care for its offspring in the way a wolf, which is a K- selected species, cares for its offspring?

From Textbooks • Jun. 9, 2022

The regulation of population growth by these factors can be used to introduce a classical concept in population biology, that of K-selected versus r-selected species.

From Textbooks • Jun. 9, 2022

Animals that are r-selected do not provide a lot of resources or parental care to offspring, and the offspring are relatively self-sufficient at birth.

From Textbooks • Sep. 6, 2018

Examples of r-selected species are marine invertebrates such as jellyfish and plants such as the dandelion.

From Textbooks • Sep. 6, 2018

Ungulates practise K-selection and are viviparous; Mesozoic dinosaurs seem to have been mostly r-selected, and of course they were oviparous nest-builders.

From Scientific American • Jan. 5, 2012