11.04 Population Ecology Unit Exam

Anonymous
timer Asked: Oct 24th, 2018
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Question description

Question 1

  1. Which of the following population growth curves would be expected when no limiting factor is present?




3 points

Question 2

  1. The is the population size that can be maintained given a certain number of limiting factors:




3 points

Question 3

  1. The study of how organisms interact with their environment and with other organisms is called:




3 points

Question 4

  1. Every ecosystem carries out the basic processes of:




3 points

Question 5

  1. The biological role played by a species in its environment is called a:




3 points

Question 6

  1. Predators rarely kill and eat all available prey because:




3 points

Question 7

  1. _____ is an overabundance of nutrients that leads to excessive plant growth and reduction of oxygen in an ecosystem.




3 points

Question 8

  1. Which of these biomes receives the greatest amount of yearly rainfall?




3 points

Question 9

  1. An organism's position within a food web is known as its:




3 points

Question 10

  1. Which of the following describes organisms in a pelagic zone?




3 points

Question 11

  1. Which of the following is NOT an example of secondary succession?




3 points

Question 12

  1. In a lake, the epilimnion is the:




3 points

Question 13

  1. Which characteristic best defines desert environments?




3 points

Question 14

  1. Tropical zones are characterized by:




3 points

Question 15

  1. Phosphate ions are primarily made available to organisms through:




3 points

Question 16

  1. Groundwater located in permeable layers of rock is a/an:




3 points

Question 17

  1. Given enough time, all water eventually returns to the:




3 points

Question 18

  1. Oceans are a reservoir for carbon stored as:




3 points

Question 19

  1. Greenhouse gases include which of these?




3 points

Question 20

  1. If nothing is done to control the level of greenhouse gases in the atmosphere, global temperature is expected to:




3 points

Question 21

  1. Oxygen and nitrogen gases comprise ___ percent of the atmosphere by volume.




3 points

Question 22

  1. ___ deposition can cause dead or dying lakes and forests.




3 points

Question 23

  1. Tropical rain forest destruction factors include:




3 points

Question 24

  1. ___ is a scientific discipline that develops practical approaches to prevent extinction of species and destruction of ecosystems.




3 points

Question 25

  1. Hydrothermal vent communities lack photosynthetic organisms at the base of the food web.


2 points

Question 26

  1. The rigid, outer layer of Earth is referred to as the asthenosphere.


2 points

Question 27

  1. In commensalism, one species benefits and the other neither benefits nor is harmed.


2 points

Question 28

  1. Increases in greenhouse gases cause increases in global temperature because these gases are able to trap heat reradiated from Earth's surface.


2 points

Question 29

  1. Describe four human activities that have negative effects on Earth's ecosystems. How do human activities increase the occurrence of species extinction?





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10 points

Question 30

  1. Why are scientists concerned about the loss of species as a result of human activities? Why would the extinction of other species negatively affect human society?





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Tutor Answer

sheencartz
School: UIUC

Hey there, please find the answer attached.

QUESTION 1
1. Which of the following population growth curves would be expected when no limiting factor is
present?

BELL CURVE
J-SHAPED CURVE
K-SHAPED CURVE
S-SHAPED CURVE
3 points

QUESTION 2
1. The is the population size that can be maintained given a certain number of limiting factors:

CARRYING CAPACITY
LIMIT LEVEL
NICHE
POPULATION DENSITY
3 points

QUESTION 3
1. The study of how organisms interact with their environment and with other organisms is
called:

BIOGEOGRAPHY
CONSERVATION BIOLOGY
ECOLOGY
ENVIRONMENTALISM

3 points

QUESTION 4
1. Every ecosystem carries out the basic processes of:

ENERGY FLOW AND MATTER CYCLING
PHOTOSYNTHESIS AND NITRIFICATION
SOLAR ENERGY CAPTURE AND RE-RADIATION
EVAPORATION AND PRECIPITATION
3 points

QUESTION 5
1. The biological role played by a species in its environment is called a:

ECOSYSTEM
HABITAT
NICHE
POPULATION
3 points

QUESTION 6
1. Predators rarely kill and eat all available prey because:

PREDATOR AND PREY SPECIES OFTEN OCCUPY THE SAME TROPHIC LEVEL IN AN
ECOSYSTEM
PREY SPECIES OFTEN LACK PROTECTIVE MECHANISMS TO DETER BEING EATEN
MANY PREDATOR AND PREY SPECIES HAVE A COMMENSALISTIC RELATIONSHIP

PREDATOR SPECIES OFTEN WILL SWITCH ITS PREY AS ONE PREY SPECIES
BECOMES LESS ABUNDANT
3 points

QUESTION ...

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Anonymous
Top quality work from this guy! I'll be back!

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