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NEET • BIOLOGY • BIODIVERSITY AND CONSERVATION
Biodiversity and conservation practice · Mixed difficulty
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Showing 1-30 of 81 questions
1
Easy
1 of 81
Remembering
+4 | -1
The effect of reduction in biodiversity has been explained through Rivet popper hypothesis by
View answer and explanation
Correct option: B
Paul Ehrlich
Option B (Paul Ehrlich) is correct because Paul Ehrlich proposed the Rivet Popper hypothesis to explain the effect of reduction in biodiversity.
2
Medium
2 of 81
Remembering
+4 | -1
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.
3
Medium
3 of 81
Understanding
+4 | -1
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.
4
Medium
4 of 81
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.
5
Medium
5 of 81
Understanding
+4 | -1
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.
6
Easy
6 of 81
Remembering
+4 | -1
Identify the names of two hot spots of biodiversity in India
View answer and explanation
Correct option: B
Western ghats and North Eastern Himalayas
Option B (Western ghats and North Eastern Himalayas) is correct because these are two recognized biodiversity hotspots in India.
7
Easy
7 of 81
Understanding
+4 | -1
Which of the following species are restricted to an area?
View answer and explanation
Correct option: B
Endemic species
Option B (Endemic species) is correct because endemic species are by definition restricted to a specific geographic area.
8
Hard
8 of 81
Remembering
+4 | -1
Farmers have reported over 50% higher yields of rice by using which of the following biofertilizers?
View answer and explanation
Correct option: D
Azolla pinnata
Option D (Azolla pinnata) is correct because Azolla pinnata, when used as a biofertilizer in rice fields, can significantly increase rice yields due to its nitrogen-fixing capabilities.
9
Hard
9 of 81
Remembering
+4 | -1
In cryopreservation, germplasm is maintained at
View answer and explanation
Correct option: D
None of these
The correct answer is None of these because cryopreservation typically uses liquid nitrogen at -196°C, which is much colder than -196°F.
10
Easy
10 of 81
Remembering
+4 | -1
The total number of biodiversity hot spots in the world are
View answer and explanation
Correct option: C
34
Option C (34) is correct because there are currently 34 recognized biodiversity hotspots in the world.
11
Medium
11 of 81
Understanding
+4 | -1
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.
12
Medium
12 of 81
Remembering
+4 | -1
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.
13
Medium
13 of 81
Remembering
+4 | -1
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.
14
Medium
14 of 81
Remembering
+4 | -1
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.
15
Hard
15 of 81
Remembering
+4 | -1
How many Indian plant species are used to extract essential oils and scents?
View answer and explanation
Correct option: B
500
Option B (500) is correct because approximately 500 Indian plant species are used for extracting essential oils and scents.
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16
Hard
16 of 81
Understanding
+4 | -1
Which of the following is correctly matched?
View answer and explanation
Correct option: C
Parthenium hysterophorus- threat to biodiversity
Option C (Parthenium hysterophorus- threat to biodiversity) is correctly matched because Parthenium is an invasive species that negatively impacts biodiversity.
17
Medium
17 of 81
Remembering
+4 | -1
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.
18
Hard
18 of 81
Remembering
+4 | -1
Which one of the following is used in Rauwolfia serpentine?
View answer and explanation
Correct option: A
curing high blood pressure
Option A (curing high blood pressure) is correct because Rauwolfia serpentina is traditionally used for treating hypertension.
19
Easy
19 of 81
Understanding
+4 | -1
Wildlife is
View answer and explanation
Correct option: A
All biota excluding man, domestic animals and cultivated crops.
Option A (All biota excluding man, domestic animals and cultivated crops) is correct because wildlife encompasses all living organisms in their natural habitats, excluding humans, domesticated animals, and cultivated crops.
20
Easy
20 of 81
Understanding
+4 | -1
Rivet Popper hypothesis explains the importance of
View answer and explanation
Correct option: A
Species in an ecosystem
Option A (Species in an ecosystem) is correct because the Rivet Popper hypothesis uses the analogy of rivets in an airplane to explain the importance of each species in maintaining ecosystem function.
21
Hard
21 of 81
Understanding
+4 | -1
Assertion: Broadly utilitarian arguments say
that we should conserve biodiversity because
biodiversity plays a major role in many
ecosystem services that nature provides.
Reason: Exploration of molecular, genetic and
species level diversity to obtain the products
of economic importance is included under
broadly utilitarian category.
that we should conserve biodiversity because
biodiversity plays a major role in many
ecosystem services that nature provides.
Reason: Exploration of molecular, genetic and
species level diversity to obtain the products
of economic importance is included under
broadly utilitarian category.
View answer and explanation
Correct option: C
If Assertion is true but Reason is false
Option C (If Assertion is true but Reason is false) is correct because the assertion accurately describes broadly utilitarian arguments, but the reason describes narrowly utilitarian arguments.
22
Easy
22 of 81
Understanding
+4 | -1
Main cause behind destruction of biodiversity is
View answer and explanation
Correct option: A
Deforestation
Option A (Deforestation) is correct because deforestation leads to habitat destruction, loss of biodiversity, and disruption of ecosystems, making it a primary driver of biodiversity loss.
23
Medium
23 of 81
Remembering
+4 | -1
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.
24
Easy
24 of 81
Remembering
+4 | -1
Which of the following is in-situ conservation strategy ?
View answer and explanation
Correct option: C
Wildlife sanctuaries
Option C (Wildlife sanctuaries) is correct because wildlife sanctuaries are an example of in-situ conservation, which involves protecting species in their natural habitats.
25
Medium
25 of 81
Remembering
+4 | -1
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.
26
Medium
26 of 81
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.
27
Medium
27 of 81
Remembering
+4 | -1
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.
28
Medium
28 of 81
Understanding
+4 | -1
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.
29
Medium
29 of 81
Analyzing
+4 | -1
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.
30
Medium
30 of 81
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.
Revision notes and key takeaways
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Key Takeaways
- ✓ This set contains 81 single-correct-answer MCQs on BIODIVERSITY AND CONSERVATION.
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