r and K Selection Strategies

The video explains the concepts of r and K selection, which are strategies species use regarding parental investment and offspring survival. r-selected species produce many offspring with little care, while K-selected species produce fewer offspring with significant care. The video discusses population dynamics, carrying capacity, and survivorship curves, providing examples like oysters for r-selected and elephants for K-selected species.

What is the primary focus of r and K selection strategies?

• Habitat selection

• Migration patterns

• Food chain dynamics

• Parental investment and offspring survival

Which of the following is a characteristic of r-selected species?

• High parental care

• Long lifespan

• Large number of offspring

• Stable environment

What type of survivorship curve do r-selected species typically exhibit?

• Type I

• Type IV

• Type II

• Type III

Which of the following is an example of an r-selected species?

• Whales

• Elephants

• Oysters

• Humans

What is a key characteristic of K-selected species?

• Short lifespan

• Stable environment

• High number of offspring

• Low parental care

Which of the following is an example of a K-selected species?

• Frogs

• Elephants

• Oysters

• Rabbits

What type of survivorship curve do K-selected species typically exhibit?

• Type IV

• Type III

• Type II

• Type I

Which species is likely to have a Type II survivorship curve?

• Songbirds

• Elephants

• Turtles

• Oysters

What does the spectrum between r and K strategies indicate?

• Species do not change strategies

• Only mammals are K-selected

• Species can have traits of both strategies

• All species are either r or K selected

What is the purpose of survivorship curves?

• To measure the size of a species

• To track migration patterns

• To illustrate differences in survivability

• To show the growth rate of a population