Exam 55: Ecology of Individuals and Populations

Populations of endotherms that live in colder climates tend to have shorter ears and limbs than populations of the same species in warm climates.This is called ____________ Rule.

There are not many species of fish living deep in the oceans, but the deep-sea fish occasionally pulled up by fisherman have been bizarre creatures, such as the deep-sea anglerfish with its giant fangs and bioluminescent lure.Why have these fascinating deep-sea fish never been shown live on exhibit in an aquarium?

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

Demographic studies include all of the following except what?

What are population pyramids used to show?

There are three aspects of entire populations that are important and often studied.Select the best choice from the ones listed.

The statistical study of populations including sex ratio, age structure, and predicting growth rates is called _________.

A group of international students is having a heated discussion in the dining hall."Your country needs to get its population under control!" asserts a student from the United States."Perhaps," replies the Indian student, "but your country ______________________."

The trade-off between investments in current reproduction and in growth that promotes future reproduction is referred to as the total cost of what?

A small group of mice are released on an island without mice but with abundant food for mice and no predators.Initially, the growth of the mouse population will be limited mainly by what?

Many times species are composed of networks of distinct populations called metapopulations.When do metapopulations occur?

Which one of the following expressions from the logistic equation (dN/dt = rN ((K - N)/K) represents the proportion of unused resources remaining for use by the population?

The rate at which a population of a given species will increase when no limits are placed on its rate of growth is called its

In the sigmoid growth curve, the carrying capacity of the environment is indicated by what symbol?

Under which condition will a population experience growth?

You construct a life table for a plant species and find that in all cases about the same proportion of the cohort survive to the beginning of the next time interval.What would you call this?

Clumped or patched populations that undergo local periodic extinction and recolonization are called what?

The figure included shows the body temperature of lizards versus air temperature in two different habitats-open and shaded forest.Which one of the following conclusions is best supported by these data.

Effects that are dependent on the size of the population and regulate the growth of populations are called ___________ effects.

Which of the following statements about the graph is true?