# Defines Population Unit 5 Lesson 19

30 Questions | Total Attempts: 88  Settings  • 1.
Which statement best defines population?
• A.

A population is made up of all the living members of the same species in a given environment

• B.

A population is made up of certain living species in the popular environment

• C.

Population refers to people only

• D.

B and C are correct

• 2.
True or False. The more samples used by scientist, the more confusing and less accurate the estimate of the actual population size.
• A.

True

• B.

False

• 3.
When estimating a population of small plant species in an area, what type of division do scientists use?
• A.

Transects

• B.

• C.

Quandrant

• D.

Quintuplets

• 4.
For larger plant species, scientist divide the are into sample units using _________.
• A.

Transects

• B.

• C.

• D.

Quintuplets

• 5.
True or False: Making a population estimate of animals is much more difficult than making a population estimate of plants.
• A.

True

• B.

False

• 6.
What do scientist do first to estimate the population of animals in an area?
• A.

They play the flute to attract all the animals in their direction then tag all of them.

• B.

They make quadrats and transects in the area.

• C.

Only one sample of each species is capture and tagged.

• D.

A sample of animals is captured and tagged.

• 7.
______________ is the potential for all populations to grow exponentially.
• A.

Antibiotic Potential

• B.

Biotic Potential

• C.

Biographical Potential

• D.

None of the Above

• 8.
True or False. When all ideal conditions are met like sufficient food, shelter and water as well as space, the population can grow exponentially.
• A.

True

• B.

False.

• 9.
Which statement best defines environmental resistance?
• A.

Environmental resistance refers to the limiting factors in an environment that prevent populations from reaching their full biotic potential.

• B.

Examples of environmental resistance are overcrowding, limited food, predators, and other obstacles.

• C.

Environmental resistance is when the environment resists man-made pollution by excreting excess carbon dioxide in the air.

• D.

A and B are correct.

• 10.
__________ is the maximum population an environment can support.
• A.

• B.

Holding Capacity

• C.

Carrying Capacity

• D.

Equilibrium

• 11.
___________ is when a population reaches its carrying capacity with its environment.
• A.

Equilibrium

• B.

Carrying Capacity

• C.

Mortality

• D.

None of the above

• 12.
Which best defines natality.
• A.

Natality is the rate of reproduction.

• B.

Natality is the rate at which individuals die.

• C.

Natality is also known and birth rate.

• D.

A and C are correct

• 13.
____________ is the rate at which individuals die. It is also known as death rate.
• A.

Mortality

• B.

Natality

• C.

Capacity

• D.

B and C are correct

• 14.
Which statement best defines Immigration?
• A.

Immigration is the movement out of an area

• B.

Immigration is the movement out and about an area.

• C.

Immigration is the movement in an area.

• D.

Immigration is the movement around an area.

• 15.
What is the growth phase?
• A.

The growth phase is the first section of the graph.

• B.

The growth phase is often seen on the a growth curve on a graph.

• C.

The growth phase is often divided into a lag phase.

• D.

All of the above

• 16.
______________ is when the population size is still relatively small.
• A.

Growth Phase

• B.

Lag Phase

• C.

Exponential Phase

• D.

Tiny Phase

• 17.
When do we see the exponential phase on a graph?
• A.

When there is a rapid growth in population.

• B.

When there is relatively small growth in population.

• C.

When the exponent is growing in the population

• D.

C is definitely incorrect.

• 18.
_____________________________ occurs when the population total starts to level off due to the limiting factors in its environment.
• A.

Environmental Resistance Phase

• B.

Environmental exponential phase

• C.

Lag Phase

• D.

B and C are correct

• 19.
_____________ is the average increase per year that occurs over a given period of time as a percentage of the total population at the end of the period.
• A.

Average monthly increase

• B.

Average daily increase

• C.

Average annual increase

• D.

Average bi-annual increase

• 20.
Which statements are true about the Average Annual Increase?
• A.

The average annual increase allows scientists to compare the growth of similar populations in different regions.

• B.

It is also used to predict future growth.

• C.

The average annual increase is not necessary in finding population of organisms.

• D.

A and B are correct

• 21.
True or False. There are two factors limiting growth populations.
• A.

True, they are: Density Independent Factors and Density-dependent factors

• B.

False, there are three: Density Independent Factors, density-dependent factors and density semi-independent factors.

• 22.
____________ is the number of individuals in a population in a given space.
• A.

Population Density

• B.

Population Independence

• C.

Lag Phase

• D.

Growth Phase

• 23.
Which statements are true about density independent factors?
• A.

They are environmental conditions that influence population growth

• B.

Examples are weather patterns, fires, floods and earthquakes.

• C.

Density independent factors can be shown using J-shaped Curve

• D.

All of the above

• 24.
The _________ is used to show the growth patterns for organisms controlled by density-independent factors
• A.

J-shaped growth curve

• B.

S-shaped growth curve

• C.

Sigmoidal growth curve

• D.

B and C are correct

• 25.
Which statements are true about density-dependent factors.
• A.

It is a type of control where the population's size increases, so does the demand for food.

• B.

Examples are organisms affected by density-dependent factors are large mammals such as whales.

• C.

All of the above

• D.

None of the above

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