exam 6

Question 1

What is a common trait of k-selected species in terms of offspring?

Answer 1

produce a small number of offspring with a high investment in each

Question 2

The figure included shows the body temperature of lizards versus air temperature… best supported by data

Answer 2

body temperature of lizards is more constant in open than in shaded forest habitats

Question 3

A small group of mice released on island…How would you describe situation?

Answer 3

new population size is a result of density-independent regulation

Question 4

What are population pyramids used to show?

Answer 4

age composition of a population

Question 5

Organisms such as lizards that need to maintain body temperature through external means do so by

Answer 5

sunbathing

Question 6

An unscrupulous dog breeder has been selecting for dogs…Why might this strategy be counterproductive?

Answer 6

The puppies from large litters are likely to be malnourished, and the mother will have few resources to devote to future litters

Question 7

What is a key difference in the assumptions made by….regarding environmental resources?

Answer 7

logistic assumes resources are limited, while exponetial assumes they are unlimited

Question 8

Many times species are composed of networks of distinct…When do metapopulations occur?

Answer 8

When suitable habitat is patchily distributed and separated by areas of unsuitable habitat

Question 9

What is a characteristic feature of r-selected species?

Answer 9

high reproductive rate

Question 10

The size at which population stabilizes in a…for what species?

Answer 10

carrying capacity

Question 11

Relationship in which both members benefit is called

Answer 11

mutualism

Question 12

Alligators excavate holes in the bottom of bodies…alligators can be classified as an?

Answer 12

keystone species

Question 13

Which statement correctly interprets graph?

Answer 13

Paramecium caudatum and Paramecium aurelia are able to compete for the same resource and their population densities are not affected

Question 14

Competition shapes communities because there are usually limited

Answer 14

resources

Question 15

In __ mimicry, unprotected species resemble others that are distasteful

Answer 15

Bastian

Question 16

The difference in fundamental niche and the realized niche is

Answer 16

fundamental niche is the entire niche that a species is capable of using while the realized niche is just what is being occupied

Question 17

Which of following is example of commensalism?

Answer 17

barnacles hitching a ride of the skin of whale

Question 18

Resource partitioning can often be seen in similar species that…other resources and are called __species

Answer 18

sympatric

Question 19

The way in which organism utilizes environment may be called

Answer 19

its niche

Question 20

Lakes become eutrophic by

Answer 20

accumulation of organic matter

Question 21

The great deserts and associated arid areas…continents at about

Answer 21

30° north and south latitude

Question 22

Which of following marine ecosystems would be expected…primary production per unit area?

Answer 22

oligotrophic oceans

Question 23

The relatively shallow part of ocean extending…continental shelf is called

Answer 23

neritic zone

Question 24

A mountain range along the coast of continent is located perpendicular…where rain shadow is located?

Answer 24

leeward side of the mountain where cool, dry air is descending

Question 25

Biomes are broad regional areas defined flora and fauna…precipitation versus temperature?

Answer 25

Tropical Rain forest = 1; Desert = 2; Tundra = 3; Grassland = 4

Question 26

Prairie is another name for a

Answer 26

temperate grassland

Question 27

CO2 and other gases, which absorb the longer wavelengths…responsible for causing the

Answer 27

greenhouse effect

Question 28

Destruction of which biome would result in greatest loss of biodiversity?

Answer 28

tropical rain forest

Question 29

Periodic disturbances of Pacific currents that cause global weather changes are given name

Answer 29

El Nino

Question 30

If the energy of the sun no longer reached earth…ecosystems would be least affected?

Answer 30

deep sea hydrothermal vent