A patient undergoes a high level of mast cell degranulation, dilation of blood vessels, and acute drop in blood pressure. These symptoms could be caused by which of the following?

TLS Online TPP Program

#Question id: 12557

#Unit 10. Ecological Principles

Natural selection involves energetic trade-offs between

TLS Online TPP Program

#Question id: 12558

#Unit 10. Ecological Principles

The three basic variables that make up the life history of an organism are

TLS Online TPP Program

#Question id: 12611

#Unit 10. Ecological Principles

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?

TLS Online TPP Program

#Question id: 12612

#Unit 10. Ecological Principles

Which of the following pairs of reproductive strategies is consistent with energetic trade-off and reproductive success? 

TLS Online TPP Program

#Question id: 12613

#Unit 10. Ecological Principles

A population of ground squirrels has an annual per capita birth rate of 0.06 and an annual per capita death rate of 0.02. Estimate the number of individuals added to (or lost from)  population of 1,000 individuals in one year. 

TLS Online TPP Program

#Question id: 12614

#Unit 10. Ecological Principles

A small population of white-footed mice has the same intrinsic rate of increase (r) as a large population. If everything else is equal,