Defines Population Unit 5 Lesson 19

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

True

False.

2. True or False. There are two factors limiting growth populations.

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

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

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

True

False

Making a population estimate of animals is much more difficult because they void humans and are constantly moving in and out of a sampling area.

Explanation

Making a population estimate of animals is much more difficult because they void humans and are constantly moving in and out of a sampling area.

4. What type of pattern of growth exhibit the population of larger animals that tend to have few offspring at a time, have a long lifespan and live in stable environments.

J-shaped growth curve

Sigmoidal or S-shaped growth curve

None of the above

5. ______________ is the potential for all populations to grow exponentially.

Antibiotic Potential

Biotic Potential

Biographical Potential

None of the Above

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

J-shaped growth curve

S-shaped growth curve

Sigmoidal growth curve

B and C are correct

7. What are the two factors that will decrease population size.

Emigration and Death Rate

Immigration and Death Rate

Natality and Mortality

None of the above

8. Which statement best defines population?

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

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

Population refers to people only

B and C are correct

9. ___________ is when a population reaches its carrying capacity with its environment.

Equilibrium

Carrying Capacity

Mortality

None of the above

10. ____________ is the rate at which individuals die. It is also known as death rate.

Mortality

Natality

Capacity

B and C are correct

11. ___________ occurs when two species cannot co-exist, which results in the extinction of one of those species

Competitive exclusion

Friendly exclusions

Extinction

None of the above

12. __________ is the maximum population an environment can support.

Loading Capacity

Holding Capacity

Carrying Capacity

Equilibrium

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

True

False

Scientists estimate populations of an organism using sample counts. The more samples use, the more accurate the estimate of the actual population size.

Explanation

Scientists estimate populations of an organism using sample counts. The more samples use, the more accurate the estimate of the actual population size.

14. Which statement best defines Immigration?

Immigration is the movement out of an area

Immigration is the movement out and about an area.

Immigration is the movement in an area.

Immigration is the movement around an area.

15. ______________ is when the population size is still relatively small.

Growth Phase

Lag Phase

Exponential Phase

Tiny Phase

16. ____________ is the number of individuals in a population in a given space.

Population Density

Population Independence

Lag Phase

Growth Phase

17. Competition is _____________ when it is between members of different species.

Intraspecific

Interspecific

Competitive

None of the above

18. Competition is ______________ when it is between members of the same species.

Intraspecific

Interspecific

Compettive

None of the above

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.

Average monthly increase

Average daily increase

Average annual increase

Average bi-annual increase

20. For larger plant species, scientist divide the are into sample units using _________.

Transects

Quadrats

Quadrants

Quintuplets

21. What is the growth phase?

The growth phase is the first section of the graph.

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

The growth phase is often divided into a lag phase.

All of the above

22. When do we see the exponential phase on a graph?

When there is a rapid growth in population.

When there is relatively small growth in population.

When the exponent is growing in the population

C is definitely incorrect.

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

Environmental Resistance Phase

Environmental exponential phase

Lag Phase

B and C are correct

24. Which statements are true about the Average Annual Increase?

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

It is also used to predict future growth.

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

A and B are correct

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

Transects

Quadrats

Quandrant

Quintuplets

26. Which statement best defines environmental resistance?

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

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

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

A and B are correct.

27. Which statements are true about density-dependent factors.

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

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

All of the above

None of the above

28. What do scientist do first to estimate the population of animals in an area?

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

They make quadrats and transects in the area.

Only one sample of each species is capture and tagged.

A sample of animals is captured and tagged.

29. Which best defines natality.

Natality is the rate of reproduction.

Natality is the rate at which individuals die.

Natality is also known and birth rate.

A and C are correct

30. Which statements are true about density independent factors?

They are environmental conditions that influence population growth

Examples are weather patterns, fires, floods and earthquakes.

Density independent factors can be shown using J-shaped Curve

All of the above