Human Ecology and Family Science Class 11. We covered all the Human Ecology and Family Science Class 11 in this post for free so that you can practice well for the exam.
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Human Ecology and Family Science Class 11 Objective for Students
Trophic level I includes
(A) Herbivorous animals
(B) Carnivorous animals
(C) Omnivorous animals
(D) Green plants
Option d – Green plants
Which one of the following pairs is correctly matched? ( Human Ecology and Family MCQ )
(A) Mountain: Most stable ecosystem
(B) Abiotic component: Bacteria
(C) Green plants: Ecosystem
(D) Rainfall: Global warming
Option c – Green plants: Ecosystem
The correct order in the food chain of the various components of a terrestrial grass ecosystem is
(A) Grass, grasshopper, frog, snake
(B) Grass, grasshopper, snake, frog
(C) Grasshopper, frog, grass, snake
(D) Grasshopper, snake, frog, grass
Option a – Grass, grasshopper, frog, snake
Which of the following constitutes a food chain? ( Human Ecology and Family MCQ )
(A) Grass, wheat, and mango
(B) Grass, goat, and human
(C) Goat, cow, and elephant
(D) Grass, fish, and goat
Option b – Grass, goat, and human
Biomass Pyramid is reversed in which type of ecosystem?
(A) Forest
(B) Pond
(C) Grassland
(D) Drylands
Option b – Pond
Which one of the following organisms is likely to show the highest concentration of DDT, once it has been introduced into the ecosystem? ( Human Ecology and Family MCQ )
(A) Grasshopper
(B) Toad
(C) Snake
(D) Cattle
Option c – Snake
(A) the transfer of energy as food from one tropic level to another
(B) the transfer of heat from one matter to another
(C) the transfer of birds from one zone to another
(D) the transfer of water from one zone to another
In the marine environment, the main primary producers are ( Human Ecology and Family MCQ )
(A) Phytoplanktons
(B) Seaweeds
(C) Marine angiosperms
(D) Aquatic bryophytes
Option a – Phytoplanktons
Among the biotic components of the ecosystem, the producer system is
(A) cow
(B) peacock
(C) tiger
(D) green plants
Option d – green plants
Which one of the following is one of the main causes of ecological imbalance in India? ( Human Ecology and Family MCQ )
(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 ( Human Ecology and Family MCQ )
(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 ( Human Ecology and Family MCQ )
(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? ( Human Ecology and Family MCQ )
(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? ( Human Ecology and Family MCQ )
(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
Which of the following is an artificial ecosystem? ( Human Ecology and Family MCQ )
(A) Rice field
(B) Forest
(C) Grassland
(D) Lake
Option a – Rice field
The number of organisms that can be supported by the environment in a given area is known as
(A) Population
(B) Carrying Capacity
(C) Pyramid of number or biomass
(D) None of the above
Option b – Carrying Capacity
Which of the following is not true? about the ecosystem? ( Human Ecology and Family MCQ )
(A) It represents all living organisms and physical environments in any given space-time unit.
(B) It is a functional unit
(C) It has its own productivity
(D) It is a closed system
Option d – It is a closed system
Which one of the following is the best? description of the term ‘ecosystem’?
(A) A community of organisms interacting with one another
(B) That part of the Earth which is inhabited by living organisms
(C) A community of organisms together with the environment in which they live
(D) Flora and fauna of a geographical area
Option c – A community of organisms together with the environment in which they live
‘Ecology’ is the study of the relationship between ( Human Ecology and Family MCQ )
(A) Organism and environment
(B) Man and forest
(C) Soil and water
(D) Husband and wife
Option a – Organism and environment
The term Ecosystem was proposed by
(A) G. Tailor
(B) E. Hartigan
(C) D.R. Stoddart
(D) Tansley
Option d – Tansley
Which of the following is an artificial ecosystem?
(A) Ponds
(B) Field
(C) Forest
(D) None of these
Option b – Field
Who among the following propounded the 10 percent law?
(a) Raymond Lindeman
(b) Tansley
(c) Arne Naess
(d) Grinnell
Option a – Raymond Lindeman
(a) the transfer of energy as food from one tropic level to another.
(b) transfer of heat from one matter to another.
(c) transfer of birds from one zone to another.
(d) transfer of water from one zone to another.
(e) None of the above
The cycling of elements in an ecosystem is called
(a) chemical cycle
(b) biogeochemical cycle
(c) geological cycle
(d) geochemical cycle
Option b – biogeochemical cycle
The minimum area of land required to completely sustain the life of the person is called his
(a) biota
(b) ecological footprint
(c) biome
(d) niche
Option b – ecological footprint
The measurement unit of ecological footprint is
(a) global hectare
(b) Nanometer
(c) Hoppus cubic foot
(d) Cubic ten
Option a – global hectare
A biological community in its environment such as a pond, an ocean, a forest, or even an aquarium is known as
(a) biome
(b) community
(c) abiotic environment
(d) ecosystem
Option a – biome
The mechanism of the Ecosystem involves
(a) energy flow
(b) biogeochemical cycle
(c) Both (a) and (b)
(d) None of the above
Option c – Both (a) and (b)
The pyramid of biomass will be inverted in the ecosystem of
(a) forests
(b) ponds
(c) grasslands
(d) drylands
Option b – ponds
The ecological pyramid that is always upright is
(a) the pyramid of energy
(b) the pyramid of biomass
(c) the pyramid of numbers
(d) None of the above
Option a – the pyramid of energy
If the amount of energy or biomass or the population of organisms at successive trophic levels is plotted as horizontal bars above the other, it produces an
(a) square shape
(b) rectangular shape
(c) pyramidal shape
(d) highly irregular shape
Option c – pyramidal shape
The ecological pyramid of numbers or biomass has a lesson for us that we should have …… food habits.
(a) non-vegetarian
(b) vegetarian
(c) high consumption
(d) intensive
Option b – vegetarian
Why are trophic levels in the shape of pyramids?
(a) Due to loss in energy between the trophic level.
(b) Due to the transfer of heat.
(c) Due to the increase of energy between the trophic level.
(d) Due to stable energy between the trophic level.
Option a – Due to loss in energy between the trophic level
Consider the following statements regarding ecological pyramids. I. It was propounded by Charles Elton in 1927. II. It shows the relationship between primary producers and consumers in the context of a number of biomass and energy. Which among the above-given statements is/are incorrect?
(a) Only I
(b) Only II
(c) Both I and II
(d) Neither I nor II
Option d – Neither I nor II
In a food chain, man is
(a) producer
(b) only primary consumer
(c) only secondary consumer
(d) primary as well as a secondary consumer
Option d – primary as well as a secondary consumer
Among the biotic components of the ecosystem, the producer system is
(a) cow
(b) peacock
(c) tiger
(d) green plants
Option d – green plants
In the marine environment, the main primary producers are
(a) Phytoplanktons
(b) Seaweeds
(c) Marine angiosperms
(d) Aquatic bryophytes
Option a – Phytoplanktons
In a food chain, the solar energy utilized by plants is only
(a) 10%
(b) 0.01%
(c) 0.1%
(d) 1%
Option a – 10%
The food chain is a
(a) relationship between autotrophic organisms.
(b) exchange of genetic material between two organisms.
(c) passage of food (and thus energy) from one organism to another.
(d) modern entrepreneur establishment providing food outlets.
Option c – passage of food (and thus energy) from one organism to another
In the context of ecosystem productivity marine upwelling zones are important as they increase marine productivity by bringing the I. decomposer micro-organisms to the surface. II. nutrients to the surface. III. bottom-dwelling organisms to the surface. Which of the statements given above is/are correct?
(a) I and II
(b) Only II
(c) II and III
(d) Only III
Option b – Only II
Who among the following first enunciated the concept of ecological pyramids in 1927?
(a) Griffith Taylor
(b) Charles Elton
(c) Ratzel
(d) None of the above
Option b – Charles Elton
How many types of ecological pyramids are there?
(a) One
(b) Two
(c) Three
(d) Four
Option c – Three
If a tropical rainforest is removed, it does not regenerate quickly as compared to a tropical deciduous forest. This is because
(a) the soil of rainforests is deficient in nutrients.
(b) propagules of the trees in a rainforest have poor viability.
(c) the rainforest species are slow growing.
(d) exotic species invade the fertile soil of rainforest.
Option a – the soil of rainforests is deficient in nutrients
In dry regions, the leaf size of a tree becomes smaller. It is so to
(a) reduce metabolism
(b) reduce transpiration
(c) maintain natural growth
(d) protect plants from animals
Option b – reduce transpiration
Arrange the following ecosystem in order of their decreasing productivity with the help of codes given below. I. Desert II. Grassland III. Ocean IV. Swamp V. Tropical Moist Deciduous Forest VI. Tropical Forest Codes
(a) VI, V, IV, II, III, I
(b) VI, IV, III, II, I, V
(c) IV, III, II, V, I, VI
(d) I, III, IV, II, V, VI
Option a – VI, V, IV, II, III, I
The primary source of energy in eco-body is ………
(a) the energy emitted by fermentation
(b) preserved vegetable sugar
(c) solar energy
(d) None of the above
Option c – solar energy
Which of the following is not a biotic component of an ecosystem?
(a) Air
(b) Plant
(c) Bacteria
(d) Animals
Option a – Air
Transfer of energy from one organism to another in an ecosystem takes place in an
(a) linear manner
(b) hierarchical manner
(c) discrete manner
(d) cyclic manner
Option d – cyclic manner
Which of the following statement is correct?
(a) The energy flow in the biospheric ecosystem is unidirectional.
(b) The energy flow in the biospheric is cyclical.
(c) Relative loss of energy in the natural ecosystem decrease with increasing trophic levels.
(d) Species at progressively higher trophic levels appear to be less efficient in using available energy.
Option d – Species at progressively higher trophic levels appear to be less efficient in using available energy
In the context of ecosystem productivity, marine upwelling zones are important as they increase marine productivity by bringing the I. decomposer micro-organisms to the surface. II. nutrients to the surface. III. bottom-dwelling organisms to the surface. Select the correct answer using the codes given below
(a) I and II
(b) Only II
(c) II and III
(d) Only III
Option c – II and III
Consider the following statement regarding the ecosystem. I. AG Tansley had used the word ecosystem for the first time. II. The organisms producing their own food are called Autotrophs. their food III. The consumers prepare with the help of photosynthesis. IV. Decomposers convert inorganic material into organic one. Which of the statements given above is correct?
(a) I and II
(b) II and III
(c) II and IV
(d) III and IV
Option a – I and II
The actual location or place where called an organism lives is
(a) habitat
(b) ecosystem
(c) niche
(d) biome
Option a – habitat
The movement of nutrient elements through the various components of an ecosystem is called
(a) Bio-geo-chemical cycle
(b) Bio-geological cycle
(c) Ecological succession
(d) Biological cycle
Option a – Bio-geo-chemical cycle
Which one of the following ecosystems covers the largest areas 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 correct sequence of ecosystems in the order of decreasing productivity?
(a) Oceans, lakes, grasslands, mangroves
(b) Mangroves, oceans, grasslands, lakes
(c) Mangroves, grasslands, lakes, oceans
(d) Oceans, mangroves, lakes, grasslands
Option c – Mangroves, grasslands, lakes, oceans
NPP (Net Primary Productivity) is highest for
(a) tropical forests
(b) swamps
(c) reefs
(d) woodland and shrubland
Option a – tropical forests
An example of a ‘Lentic Habitat’ in the freshwater community is
(a) ponds and swamps
(b) waterfalls and rivers
(c) ponds and rivers
(d) All of the above
Option a – ponds and swamps
Which one among the following covers the highest percentage of forest area in the world?
(a) Temperate Coniferous Forests
(b) Temperate Deciduous Forests
(c) Tropical Monsoon Forests
(d) Tropical Rain Forests
Option d – Tropical Rain Forests
Most of the desert plants bloom during the night because
(a) their blooming is controlled by low temperatures.
(b) they are sensitive to the phase of the moon.
(c) the desert insects eat away flowers during day time.
(d) the desert insects are active during nighttime.
Option d – the desert insects are active during nighttime
(a) the growth of plants without soil.
(b) growth of plants without water.
(c) conservation of water.
(d) relation of sound with water.
Option a – the growth of plants without soil
Which among the following is the most stable ecosystem?
(a) Ocean
(b) Forest
(c) Mountain
(d) Desert
Option a – Ocean
Which one of the following is the largest ecosystem in the world?
(a) Ocean
(b) Grassland
(c) Forest
(d) Mountain
Option a – Ocean
Which of the following is an artificial ecosystem?
(a) Ponds
(b) Field
(c) Forests
(d) None of these
Option b – Field
Which one of the following is the best description of the term ecosystem?
(a) A community of organisms interacting with one another.
(b) That part of the Earth is inhabited by living organisms.
(c) A community of organisms together with the environment in which they live.
(d) Flora and fauna of a geographical area.
Option c – A community of organisms together with the environment in which they live
The rapid rate of decline in the vulture population in India is mainly due to
(a) the overuse of diclofenac drug
(b) the low death rate of animals.
(c) the high death rate of animals.
(d) cleanliness
Option a – the overuse of diclofenac drug
Which one of the following is not a major cause of Wildlife Extinction?
(a) Loss of natural habitat.
(b) To make a fire in the forest.
(c) Illegal commercial trade of wildlife.
(d) The fast pace of population growth.
Option d – The fast pace of population growth
The functioning of an ecosystem involves
(a) the flow of energy and the circulation of nutrients.
(b) an increasing simplicity of relations.
(c) increasing animal populations.
(d) an increasing number of trees, bushes, etc.
Option a – the flow of energy and the circulation of nutrients
All components and individuals in an ecosystem are
(a) individualistic
(b) independent
(c) interdependent
(d) dispensable
Option c – interdependent
Which one of the following organisms represents the primary consumer category in an ecosystem?
(a) Caterpillar
(b) Crab apple tree
(c) Frog
(d) Sparrowhawk
Option a – Caterpillar
Which among the following is correct regarding the ecosystem?
(a) Primary consumers are least dependent upon producers.
(b) Primary consumers out-number producers.
(c) Producers are more than primary consumers.
(d) Secondary consumers are the largest and most powerful.
Option c – Producers are more than primary consumers
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