Activities Quiz

Chapter 52: Population Ecology

Activities Quiz

1 .

You are doing a mark-recapture experiment to determine the population size of the MendAliens living on an island in my back yard. Initially, you catch and mark 130 MendAliens, which you then release. Next, you capture 90 MendAliens, of which 20 are marked. What is your estimate of the population size of MendAliens living on the island in my back yard? (Activity: Techniques for Estimating Population Density and Size)

14

29

130

585

234,000

2 .

Assume there are 200 MendAliens living on an island in my back yard. If my island has an area of 20 hectares, what is the population density of MendAliens in terms of MendAliens per hectare? (Activity: Techniques for Estimating Population Density and Size)

0.1 MendAliens per hectare

4 MendAliens per hectare

10 MendAliens per hectare

200 MendAliens per hectare

4,000 MendAliens per hectare

3 .

The mark-recapture method would be best for sampling a population of _____. (Activity: Techniques for Estimating Population Density and Size)

sharks

maple trees

rose bushes

wheat

oysters

4 .

Which of these species typically has a mortality rate that remains fairly constant over an individual's life span? (Activity: Investigating Survivorship Curves)

humans

robins

grasses

elephants

oysters

5 .

Oyster populations are primarily, if not exclusively, composed of _____. (Activity: Investigating Survivorship Curves)

larvae

adults

juveniles

larval and juvenile oysters

prereproductive oysters

6 .

Which of these organisms has a survivorship curve similar to that of oysters? (Activity: Investigating Survivorship Curves)

humans

robins

grasses

elephants

cats

7 .

Which of these organisms has a survivorship curve similar to that of humans? (Activity: Investigating Survivorship Curves)

oysters

robins

grasses

elephants

cats

8 .

At current rates of growth, the current human population size is expected to double in about _____ years. (Activity: Human Population Growth)

10

20

40

80

160

9 .

Which of these was the first of the major events that stimulated an increase in the size of the human population? (Activity: Human Population Growth)

the Industrial Revolution

the discovery of antibiotics

the advent of agriculture

the discovery of vaccines

the bubonic plague

10 .

Which of these was the second of the major events that stimulated an increase in the size of the human population? (Activity: Human Population Growth)

the Industrial Revolution

the discovery of antibiotics

the advent of agriculture

the discovery of vaccines

the bubonic plague

11 .

Which of these was the third of the major events that stimulated an increase in the size of the human population? (Activity: Human Population Growth)

the Industrial Revolution

the discovery of antibiotics

the advent of agriculture

the discovery of vaccines

the discovery of vaccines and the discovery of antibiotics

12 .

Currently, how large is the worldwide population of humans relative to Earth's carrying capacity for humans? (Activity: Human Population Growth)

at the carrying capacity

above the carrying capacity

below the carrying capacity

either at or above the carrying capacity

there is insufficient information to answer this question

13 .

Ignoring migration, the age structure of a human population likely to increase in size will have what shape? (Activity: Analyzing Age-Structure Pyramids)

pyramid

inverted pyramid

a rectangle tapering toward the top

both a pyramid and a rectangle tapering toward the top result in a population that increases in size

both an inverted pyramid and a rectangle tapering toward the top result in a population that increases in size

14 .

Ignoring migration, the age structure of a human population likely to decrease in size will have what shape? (Activity: Analyzing Age-Structure Pyramids)

pyramid

inverted pyramid

a rectangle tapering toward the top

both a pyramid and a rectangle tapering toward the top result in a population that decreases in size

both an inverted pyramid and a rectangle tapering toward the top result in a population that decreases in size

15 .

Ignoring migration, the age structure diagram of a human population likely to maintain a relatively stable size will have what shape? (Activity: Analyzing Age-Structure Pyramids)

pyramid

inverted pyramid

a rectangle tapering toward the top

both a pyramid and a rectangle tapering toward the top result in a population that remains stable in size

both an inverted pyramid and a rectangle tapering toward the top result in a population that remains stable in size