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NEET • BIOLOGY • BIODIVERSITY AND CONSERVATION
Biodiversity and conservation practice · Medium
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Showing 1-30 of 36 questions
1
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Remembering
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The IUCN Red List (2004) documents the extinction of 784 species in the last
View answer and explanation
Correct option: B
500 years
Option B (500 years) is correct because the IUCN Red List (2004) documents the extinction of 784 species in the last 500 years.
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Understanding
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Wildlife conservation aims at
I. maintaining the ecological process
II. to enrich the wildlife diversity with exotic species
III. preventing migration of the species
IV. maintaining the diversity of life
Select the correct answer using the codes given below
I. maintaining the ecological process
II. to enrich the wildlife diversity with exotic species
III. preventing migration of the species
IV. maintaining the diversity of life
Select the correct answer using the codes given below
View answer and explanation
Correct option: D
I and IV
Option D (I and IV) is correct because wildlife conservation aims at maintaining ecological processes and the diversity of life, while preventing migration and enriching with exotic species are generally not conservation goals.
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Analyzing
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Find the odd one out w.r.t. off site conservation
View answer and explanation
Correct option: C
National parks
Option C (National parks) is correct because National Parks are examples of in-situ conservation, while the other options are ex-situ conservation methods.
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Understanding
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Biosphere reserves are different from national park as
View answer and explanation
Correct option: B
Human are integral part of biosphere reserves
Option B (Human are integral part of biosphere reserves) is correct because biosphere reserves are designed to integrate human activities with conservation, allowing for sustainable use of resources within designated zones.
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Understanding
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Which of the following statement are true?
I. Species diversity provides stability to the ecosystem
II. Communities with more species tends to be more stable than those with less species
III. Ecosystem with higher biodiversity are more productive than the ecosystem with lower biodiversity
IV. Biodiversity is not essential for the maintenance and health of ecosystem Choose the correct option
I. Species diversity provides stability to the ecosystem
II. Communities with more species tends to be more stable than those with less species
III. Ecosystem with higher biodiversity are more productive than the ecosystem with lower biodiversity
IV. Biodiversity is not essential for the maintenance and health of ecosystem Choose the correct option
View answer and explanation
Correct option: A
I, II and III
Option A (I, II and III) is correct because species diversity contributes to ecosystem stability, communities with more species tend to be more stable, and ecosystems with higher biodiversity are generally more productive.
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Remembering
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Which of the following is the correct estimation about the numbers of national parks, biosphere and the wildlife sanctuaries of India
View answer and explanation
Correct option: D
90,14,448
Option D (90,14,448) is correct because it represents the approximate numbers of national parks, biosphere reserves, and wildlife sanctuaries in India.
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Remembering
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How many living species are actually there a waiting to be discovered and named?
View answer and explanation
Correct option: B
About 78 per cent of Robert May’s estimates
Option B (About 78 per cent of Robert May’s estimates) is correct because Robert May estimated there are about 7 million species, and we have discovered and named about 1.5 million, leaving about 78% undiscovered.
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Remembering
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While studying ‘species area relationship’ the equation “log S = log C + Z log A” is used. The alphabet ‘C’ stands for
View answer and explanation
Correct option: B
Y – Intercept
Option B (Y – Intercept) is correct because in the equation log S = log C + Z log A, 'C' represents the Y-intercept of the species-area relationship on a logarithmic scale.
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Remembering
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Which one of the following pairs of organisms are exotic species introduced in India?
View answer and explanation
Correct option: C
Water hyacinth, Prosopis cineraria
Option B (Lantana camara, water hyacinth) is correct as both are well-known examples of invasive exotic species introduced to India.
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Remembering
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Which of the following is an example of organism that has recently become extinct in Africa?
View answer and explanation
Correct option: D
Quagga
Option D (Quagga) is correct because the Quagga is an example of an organism that recently became extinct in Africa.
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Remembering
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Which of the following is ex-situ conservation strategy?
View answer and explanation
Correct option: A
Wildlife safari park
Option A (Wildlife safari park) is correct because wildlife safari parks are an example of ex-situ conservation, where animals are maintained in artificial environments.
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Analyzing
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S-I: An ecosystem with high biodiversity is more stable.
S-II: As biodiversity is more the intraspecific competition keeps most populations at stable phase.
S-II: As biodiversity is more the intraspecific competition keeps most populations at stable phase.
View answer and explanation
Correct option: C
S-I correct & S-II incorrect
Option C (S-I correct & S-II incorrect) is correct because an ecosystem with high biodiversity is indeed more stable, but the reason provided about intraspecific competition is not the primary reason for this stability.
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Remembering
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Arrange the following groups of vertebrates in descending order on the basis of their species available in Amazon rain forest A) Mammals B) Fishes C) Birds D) Reptiles
View answer and explanation
Correct option: D
B – C – A – D
Option D (B – C – A – D) is correct because the descending order of species richness in the Amazon rainforest is: Fishes > Birds > Mammals > Reptiles.
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Understanding
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The narrowly utilitarian arguments for conserving biodiversity includes the following from the given list
I. Ecosystem services like photosynthesis
II. Industrial products like dyes and lubricants
III. Watching spring flowers in full bloom
IV. The aesthetic pleasure of walking through thick
V. Fibre, firewood and construction material
VI. Products of medicinal importance
Choose the correct option
I. Ecosystem services like photosynthesis
II. Industrial products like dyes and lubricants
III. Watching spring flowers in full bloom
IV. The aesthetic pleasure of walking through thick
V. Fibre, firewood and construction material
VI. Products of medicinal importance
Choose the correct option
View answer and explanation
Correct option: B
II, III, VI
Option B (II, III, VI) is correct because narrowly utilitarian arguments focus on the direct economic benefits humans derive from biodiversity, such as industrial products, aesthetic pleasure (which can drive tourism), and medicinal resources.
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Analyzing
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Identify the INCORRECT ONE
View answer and explanation
Correct option: C
Temperature latitudinal range of to harbor more species
Option A (New York at has 105 species of birds) is the INCORRECT ONE because the number of bird species is much higher than 105 at that latitude.
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Remembering
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Initially …A… biodiversity hot spots were identified but subsequently nine more have been added to the list, bringing the total number of biodiversity hot spot in the world to …B… . These hot spots are the regions of accelerated habitat loss. Three of these hot spots-Western ghats and Sri Lanka, Indo-Burma and Himalaya, covers our country’s, exceptionally high biodiversity regions
Although all the biodiversity hot spots put together covers less than …C… % of the earth’s land area, the number of species they collectively harbour is extremely high and the strict protection of these hot spots could reduce the ongoing mass extinctions by almost …D… %. A, B, C and D in the paragraph refers to
Although all the biodiversity hot spots put together covers less than …C… % of the earth’s land area, the number of species they collectively harbour is extremely high and the strict protection of these hot spots could reduce the ongoing mass extinctions by almost …D… %. A, B, C and D in the paragraph refers to
View answer and explanation
Correct option: B
A-25, B-34, C-2, D-30
Option B (A-25, B-34, C-2, D-30) is correct because it accurately fills in the blanks regarding biodiversity hotspots and their characteristics.
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Remembering
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Rivet-popper hypothesis was given by
View answer and explanation
Correct option: B
Paul Ehrlich
Option B (Paul Ehrlich) is correct because the Rivet-popper hypothesis, which explains the importance of each species in an ecosystem, was proposed by Paul Ehrlich.
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Understanding
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Which of the following is correctly matched?
I. Alpha diversity – Number of species in a given habitat
II. Genetic diversity – Variation of the genes within species
III. Beta diversity – Diversity of the habitat in the whole region
IV. Species diversity – Product of the species richness and evenness
I. Alpha diversity – Number of species in a given habitat
II. Genetic diversity – Variation of the genes within species
III. Beta diversity – Diversity of the habitat in the whole region
IV. Species diversity – Product of the species richness and evenness
View answer and explanation
Correct option: D
I, II and IV
Option D (I, II and IV) is correct because it accurately matches alpha diversity, genetic diversity, and species diversity with their respective definitions.
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Analyzing
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All of the following have common cause of their extinction, except
View answer and explanation
Correct option: C
Clarias gariepinus
Option C (Clarias gariepinus) is correct because Dodo, Passenger pigeon, and Steller's sea cow all went extinct due to human activities like hunting and habitat destruction, while Clarias gariepinus is an invasive species that threatens native species.
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Application
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There is a forest next to Raju’s village which is a natural habitat for an endangered species of lotus. The Government plans to develop a highway through the forest which will cause disturbance in the habitat and may lead to exctinction of the endangered species. Being an environmental activist, what must have Raju suggested the Government in order to save the species as the highway project is also important for the development of the village?
View answer and explanation
Correct option: C
Ex situ conservation
Option C (Ex situ conservation) is correct because it involves removing the endangered species from its habitat and conserving it in a protected environment like a botanical garden or zoo, which is suitable when the habitat is threatened.
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Understanding
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What is the sustainable use of resources?
View answer and explanation
Correct option: C
The ability to use natural resources in a way that helps people to protect the ecosystem
Option C (The ability to use natural resources in a way that helps people to protect the ecosystem) is correct because sustainable use of resources involves utilizing resources in a manner that benefits both human needs and the long-term health and stability of ecosystems.
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Analyzing
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Assertion (A): Tropical regions are more diversity rich in comparison to temperate areas.
Reason (R): Availability of more solar energy directly affects the presence of more species in these areas.
Reason (R): Availability of more solar energy directly affects the presence of more species in these areas.
View answer and explanation
Correct option: C
A is True R is False
Option C (A is True R is False) is correct because tropical regions are indeed more diversity-rich, but the reason given is an oversimplification. While solar energy is important, it doesn't *directly* affect the presence of more species.
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Analyzing
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Assertion: Biodiversity hotspots are the regions
which possess high levels of species richness,
high degree of endemism and no loss to habitats.
Reason: Total number of biodiversity hotspots
in the world is 32 with two of these hotspots
found in India.
which possess high levels of species richness,
high degree of endemism and no loss to habitats.
Reason: Total number of biodiversity hotspots
in the world is 32 with two of these hotspots
found in India.
View answer and explanation
Correct option: D
If both Assertion and Reason are false
Option D (If both Assertion and Reason are false) is correct because biodiversity hotspots can experience habitat loss, and there are more than two hotspots in India (including regions of the Himalayas and the Western Ghats). The total number of biodiversity hotspots is more than 32.
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Analyzing
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Assertion: In case, a species becomes extinct,
the plant and animal species associated with it
in an obligatory way also become extinct.
Reason: When a host fish species becomes
extinct, its unique assemblage of parasites also
become extinct.
the plant and animal species associated with it
in an obligatory way also become extinct.
Reason: When a host fish species becomes
extinct, its unique assemblage of parasites also
become extinct.
View answer and explanation
Correct option: B
If both Assertion and Reason are true but Reason
is not the correct explanation of Assertion
is not the correct explanation of Assertion
Option B (If both Assertion and Reason are true but Reason is not the correct explanation of Assertion) is correct because both the assertion and reason are true statements, but the reason doesn't explain the assertion.
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Analyzing
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Assertion: Communities that comprise of more species tend to be more stable.
Reason: A higher number of species results in less animal variation in total biomass.
Reason: A higher number of species results in less animal variation in total biomass.
View answer and explanation
Correct option: A
If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
Option C (If the Assertion is correct but Reason is incorrect) is correct because communities with more species tend to be more stable, but a higher number of species results in *less* animal variation in total biomass, not more.
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Understanding
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“Nature’s biological library is burning even before we catalogued the titles of all the books stocked there” suggests the concept of
View answer and explanation
Correct option: A
Loss of diversity
Option A (Loss of diversity) is correct because the quote refers to the rapid disappearance of species before they can even be identified and studied.
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Remembering
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In situ strategies includes
I. National parks
II. Wildlife sanctuaries
III. Biosphere reserves
IV. Sacred forests/Lakes
Choose the correct option
I. National parks
II. Wildlife sanctuaries
III. Biosphere reserves
IV. Sacred forests/Lakes
Choose the correct option
View answer and explanation
Correct option: D
I, II, III and IV
Option D (I, II, III and IV) is correct because National parks, Wildlife sanctuaries, Biosphere reserves, and Sacred forests/Lakes are all examples of in-situ conservation strategies.
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Understanding
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Number of wild life is continuously decreasing. What is the main reason of this?
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Correct option: A
Predation
Option C (Destruction of habitats) is correct because the destruction of habitats is the most significant factor leading to the decrease in wildlife populations, as it removes the resources and space necessary for survival.
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Understanding
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What is the main cause for the extinction of some species in tropical forest?
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Correct option: A
Deforestation
Option A (Deforestation) is correct because the primary cause of species extinction in tropical forests is habitat loss due to deforestation.
30
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Remembering
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Among vertebrates which of the given species contributes maximum to global biodiversity?
View answer and explanation
Correct option: A
Fish
Option A (Fish) is correct because fish are the most diverse group of vertebrates, contributing the most to global biodiversity among vertebrates.
Revision notes and key takeaways
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Key Takeaways
- ✓ This set contains 36 single-correct-answer MCQs on BIODIVERSITY AND CONSERVATION.
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