Question 1

An individual plant is often more difficult to recognize than an individual animal.

Accepted Answer

A) True 
 B)False  True

Question 2

An ecologist counts the number of individuals in five samples of equal area for four species of organisms.Which of these counts best represents a clumped population?

Accepted Answer

A) 23,21,25,22,18 
B) 133,124,113,128,119 
C) 47,18,93,12,28 
D) 12,13,12,13,11 
A) 23,21,25,22,18 
B) 133,124,113,128,119 
C) 47,18,93,12,28 
D) 12,13,12,13,11 C

Question 3

What is one way biologists determine the life stage of birds?

Accepted Answer

A) counting otoliths 
B) plumage 
C) examining the gap in wing bones 
D) tooth shape 
A) counting otoliths 
B) plumage 
C) examining the gap in wing bones 
D) tooth shape B

Question 4

All animals disperse actively,whereas all plants disperse passively.

Accepted Answer

A) True 
 B)False

Question 5

The ________ of a population describes its spatial location,the area over which it occurs.

Accepted Answer

The answer of The ________ of a population describes its...

Question 6

Which of the following best describes the distribution of corn in an agricultural field?

Accepted Answer

A) uniform 
B) random 
C) clumped 
D) ideal 
A) uniform 
B) random 
C) clumped 
D) ideal

Question 7

In populations of animals that defend an area for their own exclusive use or in plants that compete intensively for belowground resources such as water or nutrients,the spatial distribution of individuals is usually

Accepted Answer

A) homogenous. 
B) clumped. 
C) random. 
D) uniform. 
A) homogenous. 
B) clumped. 
C) random. 
D) uniform.

Question 8

The age of a tree is best approximated by

Accepted Answer

A) estimating tree height. 
B) counting tree growth rings. 
C) measuring the diameter of a trunk at breast height (dbh). 
D) counting the number of leaves. 
A) estimating tree height. 
B) counting tree growth rings. 
C) measuring the diameter of a trunk at breast height (dbh). 
D) counting the number of leaves.

Question 9

A ramet is genetically identical to its original parent.

Accepted Answer

A) True 
 B)False

Question 10

Populations can be divided into three ecologically important age classes: prereproductive,reproductive,and ________.

Accepted Answer

The answer of Populations can be divided into three ecologically...

Question 11

Small trees are often the same age as large individuals in the canopy.

Accepted Answer

A) True 
 B)False

Question 12

When sampling a species that has clumped distributions,which approach listed below is best?

Accepted Answer

A) sampling at random locations 
B) counting every individual 
C) calculating an ecological density 
D) assuming a uniform distribution 
A) sampling at random locations 
B) counting every individual 
C) calculating an ecological density 
D) assuming a uniform distribution

Question 13

The demographic age pyramid of a rapidly growing population is

Accepted Answer

A) wide at the base,narrow at the top. 
B) wide at the top,narrow at the bottom. 
C) wide at top and bottom,narrow in the middle. 
D) similarly wide from top to bottom. 
A) wide at the base,narrow at the top. 
B) wide at the top,narrow at the bottom. 
C) wide at top and bottom,narrow in the middle. 
D) similarly wide from top to bottom.

Question 14

According to the figure,the predominant plant in an open site is roughly ________ cm3 in size.

Accepted Answer

A) larger than 600 
B) 200.1-600 
C) 5)1-35 
D) 0)5-5 
A) larger than 600 
B) 200.1-600 
C) 5)1-35 
D) 0)5-5

Question 15

Which of the following species' range has extended extensively over the past 100 years?

Accepted Answer

A) grizzly bear 
B) gypsy moth 
C) polar bear 
D) spotted owl 
A) grizzly bear 
B) gypsy moth 
C) polar bear 
D) spotted owl

Question 16

Individuals moving from another location into a subpopulation is referred to as ________.

Accepted Answer

The answer of Individuals moving from another location into a...

Question 17

Which of the following sampling techniques represents an index of abundance rather than an estimate of density?

Accepted Answer

A) number of oak trees within a quadrat 
B) number of bear droppings along a trail 
C) ratio of marked and unmarked mice in a field 
D) number of ducks on a pond 
A) number of oak trees within a quadrat 
B) number of bear droppings along a trail 
C) ratio of marked and unmarked mice in a field 
D) number of ducks on a pond

Question 18

A genet is produced asexually.

Accepted Answer

A) True 
 B)False

Question 19

Why is Pacific salmon movement into freshwater streams considered migration if the salmon die at the head of the stream and never return to the ocean?

Accepted Answer

A) It is not considered migration but immigration. 
B) Migration is a one-way movement. 
C) Because their offspring return to the ocean,the entire population participates in the migratory event via different life stages. 
D) Most male adult fish survive reproduction and return to the ocean. 
A) It is not considered migration but immigration. 
B) Migration is a one-way movement. 
C) Because their offspring return to the ocean,the entire population participates in the migratory event via different life stages. 
D) Most male adult fish survive reproduction and return to the ocean.

Question 20

A graph that compares the relative number of individuals within different age groups of a population is called an age ________.

Accepted Answer

The answer of A graph that compares the relative number...

Exam 8: Properties of Populations

An individual plant is often more difficult to recognize than an individual animal.

An ecologist counts the number of individuals in five samples of equal area for four species of organisms.Which of these counts best represents a clumped population?

What is one way biologists determine the life stage of birds?

All animals disperse actively,whereas all plants disperse passively.

The ________ of a population describes its spatial location,the area over which it occurs.

Which of the following best describes the distribution of corn in an agricultural field?

In populations of animals that defend an area for their own exclusive use or in plants that compete intensively for belowground resources such as water or nutrients,the spatial distribution of individuals is usually

The age of a tree is best approximated by

A ramet is genetically identical to its original parent.

Populations can be divided into three ecologically important age classes: prereproductive,reproductive,and ________.

Small trees are often the same age as large individuals in the canopy.

When sampling a species that has clumped distributions,which approach listed below is best?

The demographic age pyramid of a rapidly growing population is

According to the figure,the predominant plant in an open site is roughly ________ cm3 in size.

Which of the following species' range has extended extensively over the past 100 years?

Individuals moving from another location into a subpopulation is referred to as ________.

Which of the following sampling techniques represents an index of abundance rather than an estimate of density?

A genet is produced asexually.

Why is Pacific salmon movement into freshwater streams considered migration if the salmon die at the head of the stream and never return to the ocean?

A graph that compares the relative number of individuals within different age groups of a population is called an age ________.

The Nature of Ecology

Climate

The Aquatic Environment

The Terrestrial Environment

Adaptation and Natural Selection

Plant Adaptations to the Environment

Animal Adaptations to the Environment

Population Growth

Life History

Intraspecific Population Regulation

Species Interactions, population Dynamics, and Natural Selection

Interspecific Competition

Predation

Parasitism and Mutualism

Community Structure

Factors Influencing the Structure of Communities

Community Dynamics

Landscape Dynamics

Ecosystem Energetics

Decomposition and Nutrient Cycling

Biogeochemical Cycles

Terrestrial Ecosystems

Aquatic Ecosystems

Coastal and Wetland Ecosystems

Large-Scale Patterns of Biological Diversity

The Ecology of Climate Change

Filters