Organisms and Population Test

Question 1
4 / -1

Population is a group of individuals of a single species living in a given area. It includes spatial arrangement, genetic variation and the dynamics including natality, mortality, biotic potential, carrying capacity, etc. Population structure includes features as density, abundance, spacing, genetic variations. The genetic structure reveals genetic variations and population size.
Q. ______ is the study of the ecology of population.

A
A. Autocology

B
B. Demecology

C
C. Endaphology

D
D. None of the above

Question 2
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Population is a group of individuals of a single species living in a given area. It includes spatial arrangement, genetic variation and the dynamics including natality, mortality, biotic potential, carrying capacity, etc. Population structure includes features as density, abundance, spacing, genetic variations. The genetic structure reveals genetic variations and population size.
Q. Which Indian state has the least population growth?

A
A. Kerala

B
B. U.P.

C
C. Assam

D
D. A.P

Question 3
4 / -1

Population is a group of individuals of a single species living in a given area. It includes spatial arrangement, genetic variation and the dynamics including natality, mortality, biotic potential, carrying capacity, etc. Population structure includes features as density, abundance, spacing, genetic variations. The genetic structure reveals genetic variations and population size.
Q. ______ species inhabit different geographical areas.

A
A. Sympatic

B
B. Allopatric

C
C. Both (A) and (B)

D
D. None of these

Question 4
4 / -1

Population is a group of individuals of a single species living in a given area. It includes spatial arrangement, genetic variation and the dynamics including natality, mortality, biotic potential, carrying capacity, etc. Population structure includes features as density, abundance, spacing, genetic variations. The genetic structure reveals genetic variations and population size.
Q. There is more competition for survival between :

A
A. Different animals of same niche

B
B. Same animals of same niche

C
C. Different animals of different niche

D
D. Same animals of different niches.

Question 5
4 / -1

Population is a group of individuals of a single species living in a given area. It includes spatial arrangement, genetic variation and the dynamics including natality, mortality, biotic potential, carrying capacity, etc. Population structure includes features as density, abundance, spacing, genetic variations. The genetic structure reveals genetic variations and population size.
Q. Increase in population does not increase in :

A
A. Health facilities

B
B. Unemployment

C
C. Per capita income.

D
D. Food resources

Question 6
4 / -1

Read the following text and answer the following question on the basis of the same :
All biomes of the earth constitute the earth's ecosystem. All flora and fauna occur in the lithosphere, atmosphere and hydrosphere along with their environments. Air, water, soil, biota, temperature and light are the major environmental factors that directly affect the flora and fauna in different geological areas of the earth.
Q. Climate of an area depends upon :

A
A. Altitude of the area

B
B. Latitude of the area

C
C. Topography

D
D. Both (A) and (B).

Question 7
4 / -1

Read the following text and answer the following question on the basis of the same :
All biomes of the earth constitute the earth's ecosystem. All flora and fauna occur in the lithosphere, atmosphere and hydrosphere along with their environments. Air, water, soil, biota, temperature and light are the major environmental factors that directly affect the flora and fauna in different geological areas of the earth.
Q. Edaphology is concerned with study of :

A
A. Soil

B
B. Climate

C
C. Biota

D
D. Topography

Question 8
4 / -1

Read the following text and answer the following question on the basis of the same :
All biomes of the earth constitute the earth's ecosystem. All flora and fauna occur in the lithosphere, atmosphere and hydrosphere along with their environments. Air, water, soil, biota, temperature and light are the major environmental factors that directly affect the flora and fauna in different geological areas of the earth.
Q. Hydrological cycle is concerned with :

A
A. Lithosphere

B
B. Hydrosphere

C
C. Atmosphere

D
D. All of these.

Question 9
4 / -1

Read the following text and answer the following question on the basis of the same :
All biomes of the earth constitute the earth's ecosystem. All flora and fauna occur in the lithosphere, atmosphere and hydrosphere along with their environments. Air, water, soil, biota, temperature and light are the major environmental factors that directly affect the flora and fauna in different geological areas of the earth.
Directions : In the following questions a statement of Assertion (A) is followed by a statement of reason (R). Mark the correct choice as :
Assertion (A) : Some organisms like Salmon are known as Euryhaline.
Reason (R) : Euryhaline can tolerate a wide range of salinities.

A
A. Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).

B
B. Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).

C
C. Assertion (A) is true but reason (R) is false.

D
D. Assertion (A) is false but reason (R) is true.

Question 10
4 / -1

Read the following text and answer the following question on the basis of the same :
All biomes of the earth constitute the earth's ecosystem. All flora and fauna occur in the lithosphere, atmosphere and hydrosphere along with their environments. Air, water, soil, biota, temperature and light are the major environmental factors that directly affect the flora and fauna in different geological areas of the earth.
Q. Soil aeration is inversely proportional to :

A
A. Soil pore spaces

B
B. Diameter of soil particles

C
C. Water holding capacity of soil

D
D. None of the above.

Question 11
4 / -1

Read the following text and answer the following question on the basis of the same:
Growth of a population with time shows specific and predictable patterns. Two types of growth pattern of population are exponential and logistic growth. When resources in the habitat are unlimited each species has the ability to realize fully its innate potential to grow in number. Then the population grows in exponential fashion. When the resources are limited the growth curve shows an initial slow rate and then it accelerates and finally slows giving the growth curve which is sigmoid.
Q. Identify the incorrect statement:

A
A. Exponential growth occurs in organisms such as lemmings.

B
B. Logistic growth is more realistic.

C
C. Exponential growth has two phases: lag and log.

D
D. In logistic growth, population passes well beyond the carrying capacity of the ecosystem.

Question 12
4 / -1

Read the following text and answer the following question on the basis of the same:
Growth of a population with time shows specific and predictable patterns. Two types of growth pattern of population are exponential and logistic growth. When resources in the habitat are unlimited each species has the ability to realize fully its innate potential to grow in number. Then the population grows in exponential fashion. When the resources are limited the growth curve shows an initial slow rate and then it accelerates and finally slows giving the growth curve which is sigmoid.
Q. The population growth is generally described by the following equation:
dN/dt = rN(K-N)/K
What does 'r' represent in the given equation?

A
A. Population density at time Y

B
B. Intrinsic rate of natural increase

C
C. Carrying capacity

D
D. The base of natural logarithm

Question 13
4 / -1

Read the following text and answer the following question on the basis of the same:
Growth of a population with time shows specific and predictable patterns. Two types of growth pattern of population are exponential and logistic growth. When resources in the habitat are unlimited each species has the ability to realize fully its innate potential to grow in number. Then the population grows in exponential fashion. When the resources are limited the growth curve shows an initial slow rate and then it accelerates and finally slows giving the growth curve which is sigmoid.
Q. Identify the correct equation that represents the exponential population growth curve:

A
dN/dt = IN

B
Both (A) and (C)

C
N_t =N₀e^rt

D
dN/dt = rN

Question 14
4 / -1

Read the following text and answer the following question on the basis of the same:
Growth of a population with time shows specific and predictable patterns. Two types of growth pattern of population are exponential and logistic growth. When resources in the habitat are unlimited each species has the ability to realize fully its innate potential to grow in number. Then the population grows in exponential fashion. When the resources are limited the growth curve shows an initial slow rate and then it accelerates and finally slows giving the growth curve which is sigmoid.
Q. Study the population growth curves (A and B) in the given graph and select the incorrect statement:

A
Curve 'A' shows exponential growth, represented by equation dN/dt=rN

B
Curve 'B' shows logistic growth, represented by equation dN/dt = r(K-N)/K

C
Exponential growth curve is considered as more realistic than the logistic growth curve

D
Curve 'A' can also be represented by equation N_t = N₀e^rt

Question 15
4 / -1

Read the following text and answer the following question on the basis of the same:
Growth of a population with time shows specific and predictable patterns. Two types of growth pattern of population are exponential and logistic growth. When resources in the habitat are unlimited each species has the ability to realize fully its innate potential to grow in number. Then the population grows in exponential fashion. When the resources are limited the growth curve shows an initial slow rate and then it accelerates and finally slows giving the growth curve which is sigmoid.
Q. The equations correctly represents Verhulst-Pearl logistic growth is:

A
A. dN/dt = rN(K-N)/K

B
B. dN/dt = rN/K

C
C. dN/dt = N(K-N)/K

D
D. dN/dt = r(K-N)/K

Submit Test

Organisms and P...

Question 1

A. Autocology

B. Demecology

C. Endaphology

D. None of the above

Question 2

A. Kerala

B. U.P.

C. Assam

D. A.P

Question 3

A. Sympatic

B. Allopatric

C. Both (A) and (B)

D. None of these

Question 4

A. Different animals of same niche

B. Same animals of same niche

C. Different animals of different niche

D. Same animals of different niches.

Question 5

A. Health facilities

B. Unemployment

C. Per capita income.

D. Food resources

Question 6

A. Altitude of the area

B. Latitude of the area

C. Topography

D. Both (A) and (B).

Question 7

A. Soil

B. Climate

C. Biota

D. Topography

Question 8

A. Lithosphere

B. Hydrosphere

C. Atmosphere

D. All of these.

Question 9

A. Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).

B. Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).

C. Assertion (A) is true but reason (R) is false.

D. Assertion (A) is false but reason (R) is true.

Question 10

A. Soil pore spaces

B. Diameter of soil particles

C. Water holding capacity of soil

D. None of the above.

Question 11

A. Exponential growth occurs in organisms such as lemmings.

B. Logistic growth is more realistic.

C. Exponential growth has two phases: lag and log.

D. In logistic growth, population passes well beyond the carrying capacity of the ecosystem.

Question 12

A. Population density at time Y

B. Intrinsic rate of natural increase

C. Carrying capacity

D. The base of natural logarithm

Question 13

dN/dt = IN

Both (A) and (C)

Nt =N0ert

dN/dt = rN

Question 14

Curve 'A' shows exponential growth, represented by equation dN/dt=rN

Curve 'B' shows logistic growth, represented by equation dN/dt = r(K-N)/K

Exponential growth curve is considered as more realistic than the logistic growth curve

Curve 'A' can also be represented by equation Nt = N0ert

Question 15

A. dN/dt = rN(K-N)/K

B. dN/dt = rN/K

C. dN/dt = N(K-N)/K

D. dN/dt = r(K-N)/K

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N_t =N₀e^rt

Curve 'A' can also be represented by equation N_t = N₀e^rt