Exam 5: Birth, Death and Movement

Using Table 5.2,what is one potential explanation as to why mx (proportion of female young produced per surviving individual in each class)decreases from age class 8 to 15?

In Figure 5.11a,how many years pass for a cohort before greater than 50 percent of the cohort is lost?

If you were studying the life history of a population of howler monkeys in Costa Rica,the survivorship curve would look most like Type _______.

A Type II survivorship curve:

__________ denotes a populations intrinsic rate of natural increase.

In a mark and recapture study you initially collect 50 frogs.You mark and release those 50 and plan to collect again in another week.The following week you collect 50 frogs and 10 of them are from your previous mark and recapture.How large would you estimate the population to be?

Select which of the following choices are correct.

This multicellular outgrowth is the product of a modular organism.It will proceed through its own life cycle,and its development will be indeterminate.This growth is known as which of the following terms?

An organism that has indeterminate development and grows by the repeated production of modules is defined as which type of organism?

You are studying salamanders to test if offspring fitness is affected by the number of eggs a female oviposits.What you learn is that females that lay more eggs produce smaller offspring.This is an example of ________ and means that there is __________ to high reproductive output for these salamanders.

Using Table 5.2,how would you describe the trend in l (proportion of original cohort surviving to the start of each age class)as a function of age class?

Which organism completes its entire life cycle in a single year?

If R0 were calculated as 0.88 for a population of desert mice,what would this imply?

Which of the following choices best describes an iteroparous organism?

A perennial plant (Sparaxus grandiflora)must invest resources differently when it starts to enter a reproductive stage.Which of the following choices explains how a perennial plant may deal with this?

What commonly triggers mating?

A survivorship curve of Type I:

Based on Figure 5.11,at what age group do marmots appear to experience the lowest risk of mortality?

According to Figure 5.5,which of the following statements is accurate about the perennial Sparaxis grandiflora found in South Africa?

You have been researching species of bacteria found in the rocky intertidal zone.These bacteria are likely __________ because they live in a disturbed habitat,reproduce quickly,and invest little energy in growth or development.