GK Questions and Answers on Ecological Succession and Pyramid

Ecological succession occurs when older communities of plants and animals are replaced by newer communities, whereas the ecological pyramid deals with the relationship between the number of primary producers and consumers of different orders.

1. The development of vegetation community in any ecosystem or habitat is affected closely by the:

A. Climate

B. Physiography and landforms

C. Soils

D. All of the above

Ans: D

2. Which of the following is not related to the ecological succession?

I. Ecological succession often requires an initiating disturbance, for instance, a volcanic eruption, strong winds, or a practice such as prolonged over-grazing.

II. The organic realm or biosphere is shown in three compartments: producers, consumers and decomposers.

Code:

A. Only I

B. Only II

C. Both I & II

D. Neither I nor II

Ans: A

3. Match the following

a. Aquatic Succession      1. Eutrophication

b. Fire Ecology                2. Forest management

c. Ecological Succession   3. Anthropogenic

d. Terrestrial Succession  4. Retreating Glacier

Code:

       a        b        c          d

A.    1        2        3         4

B.    4        3        2         1

C.    4        1        3         2

D.    1        4        2         3

Ans: A

4. Assertion (A): The circuit along which energy flows from producers to consumers; a one directional flow of chemical energy, ending with decompose.

Reason (R): Heterotrophs are those organisms which cannot convert solar energy into food.

Codes:

A. Both A and R are true and R is the correct explanation of A

B. Both A and R are true but R is not a correct explanation of A

C. A is true but R is false

D. Both A & R is not true 

Ans: B

GK Questions and Answers on the Biodiversity and Legislation

5. Which statement (s) is/are related to the food chain?

A. Autotrophs are those organisms that convert solar energy into chemical energy.

B. Tertiary consumers are those that eat the flesh of secondary consumers.

C. Both A & B

D. Only A

Ans: C

6. Assertion (A): Ecological succession occurs when older communities of plants and animal are replaced by newer communities.

Reason (R): The natural process of replacement of one vegetation community in a given habitat by the other vegetation community.

Codes:

A. Both A and R are true and R is the correct explanation of A

B. Both A and R are true but R is not a correct explanation of A

C. A is true but R is false

D. Both A & R is not true 

Ans: A

7.  Select the correct pair.

A. Primary Consumers: Frogs

B. Secondary Consumers:  Cows

C. Tertiary Consumers: Vulture

D. Saprophytes: Detritus

Ans: C

8. Which of the following statement is related to the Food Web?

A. When the feeding relationships in a natural ecosystem become more complicated, the food chain becomes complicated.

B. It is the sequence of energy transfer from, the lower levels to the upper or higher trophic levels.

C. In all the ecosystems, the primary producers support the consumers-organisms that ingest other organisms as their food sources.

D. All of the above

Ans: A

GK Questions and Answers on Environment Degradation and Management

9. Assertion (A): The decomposers feed on detritus, or decaying organic matter, derived from all levels.

Reason (R): At each level of energy flow in the food web, energy is lost to respiration.

Codes:

A. Both A and R are true and R is the correct explanation of A

B. Both A and R are true but R is not a correct explanation of A

C. A is true but R is false

D. Both A & R is not true 

Ans: B

10. Which of the following is/are the by-products of decomposers?

A. Water

B. Carbon Dioxide

C. Phosphorous

D. All of the above

Ans: D

In the above 10 GK Questions and Answers on Ecological Succession and Pyramid is a set of 10 Multiple Choice Questions that attune and equipped the readers as per the evolving nature of different competitive examinations.

300+ GK Questions Answers on Environment & Ecology