Organisms and Population Test

Question 1
4 / -1

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) : The human population represents the logistic growth curve.
Reason (R) : When the resources are limited leading to competition between individuals and survival of fittest, the population tends to grow in a logistic manner.

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 2
4 / -1

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) : Natality rate increases the population size and population density both.
Natality increases the number of individuals in an area by birth.

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 3
4 / -1

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) : The term interbreeding implies sexual reproduction.
Reason (R) : Interbreeding results in variation among species.

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 4
4 / -1

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) : A community with more species is more stable than that with less species.
Reason(R) : More the number of species, lesser the variation in the total biomass production year after year.

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 5
4 / -1

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) : Different habitats had different physical and chemical conditions.
Reason (R) : Physicochemical (abiotic) components characterize the habitat of an organism.

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 6
4 / -1

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) : Ecology is concerned with four levels of biological organisation.
Reason (R) : Organisms, populations, communities and biomes are four levels of biological organisation.

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 7
4 / -1

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) : Small animals are rarely found in polar regions.
Reason (R) : Heat loss or heat gain is a function of surface area. Large surface area, great loss of heat.

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 8
4 / -1

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) : Many freshwater animals cannot live for long in sea water.
Reason (R) : Freshwater animals face osmotic problems in sea water.

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 9
4 / -1

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) : Population has certain attributes which an individual organism does not have.
Reason (R) : Population is a group of people living in a well defined area, at a particular time.

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

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) : Clown fish maintains a commensalistic relation with the sea anemone.
Reason (R) : In this interaction, one species benefits and the other is neither harmed nor benefited.

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.

Submit Test

Organisms and P...

Question 1

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 2

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 3

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 4

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

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

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

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

Question 5

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 6

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 7

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 8

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 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. 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.

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