Practice Questions

TLS Online TPP Program

#Question id: 12611

Researchers in the Netherlands studied the effects of parental caregiving in European kestrels over 5 years. The researchers transferred chicks among nests to produce reduced broods (three or four chicks), normal broods (five or six), and enlarged broods (seven or eight). They then measured the percentage of male and female parent birds that survived the following winter. (Both males and females provide care for chicks.) Brood Size Manipulations in the Kestrel: Effects on Offspring and Parent Survival

Which of the following is a conclusion that can be drawn from this graph?

#Unit 10. Ecological Principles

Female survivability is more negatively affected by larger brood size than is male survivability.
Male survivability decreased by 50% between reduced and enlarged brood treatments.
Both males and females had increases in daily hunting with the enlarged brood size.
There appears to be a negative correlation between brood enlargements and parental survival.