Human Ecology and Family Science Class 12. We covered all the Human Ecology and Family Science Class 12 in this post for free so that you can practice well for the exam.
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Human Ecology and Family Science Class 12 Objective for Students
Which one of the following is one of the main causes of ecological imbalance in India?
(A) Deforestation
(B) Desertification
(C) Floods and Famines
(D) Rainfall variations
Option a – Deforestation
Which of the following is an act that disturbs the ecological balance?
(A) Lumbering
(B) Social forestry
(C) Vanamahotsav
(D) Afforestation
Option a – Lumbering
The highest trophic level in an ecosystem is obtained by
(A) Herbivores
(B) Carnivores
(C) Omnivores
(D) Decomposers
Option c – Omnivores
Which of the following is not a biotic component of an ecosystem?
(A) Air
(B) Plant
(C) Bacteria
(D) Animals
Option a – Air
The primary source of energy in Eco body is
(A) Energy emitted by fermentation
(B) Preserved vegetable sugar
(D) None of the above
In a food chain, man is
(A) producer
(B) only primary consumer
(C) only secondary consumer
(D) primary as well as secondary consumer
Option d – primary as well as secondary consumer
Which one of the following terms describes not only the physical space occupied by an organism but also its functional role in the community of organisms?
(A) Ecotone
(B) Ecological niche
(C) Habitat
(D) Home range
Option b – Ecological niche
Which one of the following ecosystems covers the largest area of the earth’s surface?
(A) Desert Ecosystem
(B) Grassland Ecosystem
(C) Mountain Ecosystem
(D) Marine Ecosystem
Option d – Marine Ecosystem
Which one of the following is the largest ecosystem in the world?
(A) Ocean
(B) Grassland
(C) Forest
(D) Mountains
Option a – Ocean
Which of the following does not help to maintain ecological balance?
(A) Cutting forest
(B) Afforestation
(C) Rainwater Management
(D) Biosphere Reserves
Option a – Cutting forest
We covered all the human ecology and family science class 12 above in this post for free so that you can practice well for the exam.
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