NCERT Solutions for Class 11 Sociology Part 2 Chapter 3 MCQ Environment and Society with answer and explanation for 2022-2023. Class 11th Sociology Chapter 3 of Part II Understanding Society multiple choice questions and solutions are useful for both CBSE and State board students during the revision.

The impact of construction of dams
[A] Submerged forest
[B] Loss of untamed life habitat
[C] Damages downstream ecosystem
[D] All of the above
Solution:
[D] All of the above
Dam construction could affect the biodiversity of microorganisms, benthos, plankton, fish (including aquatic mammals), botany and birds. Dam construction decreased the water fungal biomass and richness in reservoirs and downstream reaches, but increased the soil microorganisms in downstream lake wetlands.

Class 11 Sociology Part 2 Chapter 3 MCQ Explanation

Q1

The adverse effect of recent agriculture is

[A]. Water pollution
[B]. Soil degradation
[C]. Water logging
[D]. All of the above
Q2

Energy flow in an ecosystem is

[A]. Bidirectional
[B]. Unidirectional
[C]. Multidirectional
[D]. All rounds
Q3

In an ecotone, the species which become abundant are called

[A]. Edge species
[B]. Keystone species
[C]. Endemic species
[D]. Foster species
Q4

Which of the subsequent is that the most environmental friendly agricultural practice?

[A]. Using chemical fertilizers
[B]. Using insecticides
[C]. Organic farming
[D]. None of the above

The ultimate stable community in natural process is
[A] Climax
[B] Pioneer
[C] Sere
[D] Carnivores
Solution:
[A] Climax
This final, stable community is termed as climax community because, unlike communities earlier on within the successional process, it doesn’t change much in composition from year to year succession has reached its climax.

Class 11 Sociology Part 2 Chapter 3 MCQ with Answers

Q5

The burning of fossil fuels releases an outsized amount of

[A]. Nitrogen into air
[B]. Sulphur into air
[C]. CO₂ into air
[D]. Oxygen into air
Q6

The word ‘Environment’ springs from

[A]. Greek
[B]. French
[C]. Spanish
[D]. English
Q7

Mass of living matter at a trophic level in a locality at any given time is named

[A]. Standing state
[B]. Standing crop
[C]. Humus
[D]. Detritus
Q8

Which of those organisms features a diet consisting only of plant matter

[A]. Omnivores
[B]. Carnivores
[C]. Herbivores
[D]. Insectivores

Sustainable development means
[A] Meeting present needs without compromising on future needs
[B] Progress of personalities
[C] Balance between human needs and therefore the ability of earth to produce the resources
[D] All of the above
Solution:
[D] All of the above
Sustainable development is development that meets the wants of the current without compromising the power of future generations to satisfy their own needs.

Class 11 Sociology Part 2 Chapter 3 Multiple Choice Questions
Q9

Which of the subsequent isn’t influenced by human activities?

[A]. Destruction of mangroves and wetlands
[B]. Depletion of spring water
[C]. Increased extinction rate of species
[D]. None of the above
Q10

A bunch of living organisms of the identical kind living within the same place and at the identical time refers to a

[A]. Community
[B]. Species
[C]. Population
[D]. Consumers
Q11

Which one amongst the subsequent isn’t a gaseous biogeochemical cycle

[A]. Nitrogen cycle
[B]. Carbon cycle
[C]. Sulphur cycle
[D]. Phosphorus cycle
Q12

The species restricted to be present in one region are called

[A]. Edge species
[B]. Endemic species
[C]. Endangered species
[D]. Keystone species

The second trophic level in an exceedingly lake is
[A] Phytoplankton
[B] Zooplanktons
[C] Fishes
[D] Benthos
Solution:
[B] Zooplanktons
Zooplankton are the animal component of the planktonic community. Plankton are aquatic organisms that are unable to swim effectively against currents, and consequently drift or are carried along by currents within the ocean, or by currents in seas, lakes or rivers.

Class 11 Sociology Part 2 Chapter 3 Important MCQs
Q13

Which of the ecological pyramid is often upright

[A]. Pyramid of numbers
[B]. Pyramid of biomass
[C]. Pyramid of energy
[D]. All of the above
Q14

The upright pyramid of numbers is absent in

[A]. Lake
[B]. Pond
[C]. Grasslands
[D]. Forests
Q15

The term ‘Environment’ has been derived from the French word which implies to encircle or surround

[A]. Environ
[B]. Oikos
[C]. Geo
[D]. Aqua
Q16

A product of photosynthesis is

[A]. Carbon dioxide
[B]. Water
[C]. Oxygen
[D]. Chlorophyll

During a pyramid of numbers in grassland ecosystems, the most important population is that of
[A] Herbivores
[B] Primary consumers
[C] Secondary consumer
[D] Producers
Solution:
[A] Herbivores
The pyramid of biomass in a very grassland ecosystem is upright. Grasses occupy the bottom with the very best biomass, then followed by herbivores like rabbits, rats, etc. the first consumers are followed by secondary consumers (owl, lizards, snakes, etc.).

Actuality end of any organic phenomenon is that the
[A] Decomposer
[B] Predator
[C] Consumer
[D] Human
Solution:
[A] Decomposer
The true end of any organic phenomenon is Decomposers. The organism that breaks down the dead and decaying matter and carries out the decomposition process by an organism is termed a Decomposer.

If during a population, natality is balanced by mortality, then there’ll be
[A] Decrease in increment
[B] Increase in population growth
[C] Zero population growth
[D] Over population
Solution:
[C] Zero population growth
Zero increase (ZPG) is that the absence of growth within which equal birth and death rates create a stable human population.