ecology exam 2 2024 msstate

For plants in desert, tropical forest, and temperate forest biomes, order them by their predicted root: shoot ratios

lowest- tropical, temperate forest, desert - highest

in hot climates, would you predict a higher or lower proportion of C4 plants?

Higher

in hot and dry climates, would you expect to find a higher or lower proportion of C3 plants?

Lower

the _______ time formulation of the logistic model is more prone to instabilities and fluctuations

discrete

the less stable version of the model becomes more variable and unpredictable as the per capita growth rate_________

increases

Choas is purely random and is the same as noise

False

a population includes all living organisms that coexist in a ecosystem

false

the population growth equation Nt+1= N1+B+1-D-E REPRESENTS a “closed population”

false

in the geometric growth model. If delta>1 the population grows because the per capita birth rate exceeds the per capita death rate

true

both the exponential and geometric models assume fixed ad constant per capita birth rate and death rates for all individuals in the population

true

across the world, populations of humans in different countries tend to have surprisingly similar age structures

false

stage- structure implies that different life stages within the life cycle differ in their survival and reproduction

true

in contrast to genetic drift, demographic stochasticity plays a weaker role in small populations

false

intraspecific competition often contributes to a populations carrying capacity

true

a stable limit cycle will eventually reach carrying capacity because the oscillations dampen over time

false