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NEET • BIOLOGY • BIODIVERSITY AND CONSERVATION
Biodiversity and conservation practice · Mixed difficulty
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Showing 61-81 of 81 questions
61
Easy
61 of 81
Remembering
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Which one of the following is an example of ex situ conservation?
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Correct option: B
Seed bank
Option B (Seed bank) is correct because a seed bank is an example of ex-situ conservation, involving the storage of seeds away from their natural environment.
62
Easy
62 of 81
Understanding
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Genetic diversity is the measure of
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Correct option: B
Variety in the genetic information contained in the organisms
Option B (Variety in the genetic information contained in the organisms) is correct because genetic diversity refers to the variation in genes within a species.
63
Easy
63 of 81
Understanding
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Biosphere reserves differ from national parks and wild life sanctuaries because in the former
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Correct option: B
People are an integral part of the system
Option B (People are an integral part of the system) is correct because biosphere reserves emphasize the integration of human activities with conservation efforts, unlike national parks and wildlife sanctuaries which often prioritize strict protection.
64
Hard
64 of 81
Understanding
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The most important cause driving animals and plants to extinction is
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Correct option: B
Habitat loss and fragmentation
Option B (Habitat loss and fragmentation) is correct because it is the primary driver of species extinction globally.
65
Hard
65 of 81
Remembering
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The crustacean parasite, which changes the sex of the host crab, from male to female (castration) is:
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Correct option: D
Sacculina
Option D (Sacculina) is correct because Sacculina is a crustacean parasite known to cause parasitic castration and sex alteration in host crabs.
66
Hard
66 of 81
Understanding
+4 | -1
An ecotype is a type of species in which environmentally induced variation are
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Correct option: B
Genetically fixed
Option B (Genetically fixed) is correct because an ecotype is a distinct form of a species that is adapted to a specific environmental condition, and this adaptation is genetically determined.
67
Easy
67 of 81
Understanding
+4 | -1
Water hyacinth (Eichhornia crassipes) was introduced in Indian water to reduce pollution. It is an example of
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Correct option: C
Alien species invasions
Option C (Alien species invasions) is correct because introducing water hyacinth to reduce pollution is an example of introducing a non-native species, which can lead to ecological problems.
68
Medium
68 of 81
Remembering
+4 | -1
Among vertebrates which of the given species contributes maximum to global biodiversity?
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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.
69
Medium
69 of 81
Understanding
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The Western Ghats have a greater amphibians diversity than the Eastern Ghats. It is an example of
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Correct option: A
Species diversity
Option A (Species diversity) is correct because it refers to the difference in the number of amphibian species between the two regions.
70
Easy
70 of 81
Understanding
+4 | -1
Which of the following is most important cause of animals and plants to become extinct ?
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Correct option: D
habitat loss and fragmentation
Option D (habitat loss and fragmentation) is correct because habitat loss and fragmentation are the most significant drivers of species extinction, as they directly reduce the space and resources available for species survival.
71
Medium
71 of 81
Analyzing
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Assertion (A): Process of extinction is random and fast.
Reason (R): Any species not adapted to environmental conditions cannot survive.
Reason (R): Any species not adapted to environmental conditions cannot survive.
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Correct option: D
Both A & R are False
Option D (Both A & R are False) is correct because extinction is not random or fast in all cases, and while adaptation is important, it's not the *only* factor determining survival.
72
Easy
72 of 81
Remembering
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The medicinal plant Rauwolfia vomitoria produces a chemical called
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Correct option: B
Reserpine
Option B (Reserpine) is correct because Rauwolfia vomitoria is a medicinal plant known to produce the chemical reserpine, used to treat high blood pressure.
73
Easy
73 of 81
Remembering
+4 | -1
Which of the following expanded forms of the following acronyms is correct?
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Correct option: C
IUCN – International Union for Conservation of Nature and Natural Resources
Option C (IUCN – International Union for Conservation of Nature and Natural Resources) is correct as it represents the accurate expanded form of the acronym IUCN.
74
Medium
74 of 81
Analyzing
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Assertion (A): Western ghats are included among the hot spots of biodiversity.
Reason (R): Western ghats have greater amphibian diversity than eastern ghats.
Reason (R): Western ghats have greater amphibian diversity than eastern ghats.
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Correct option: B
A & R are True R does not explains A
Option B (A & R are True R does not explains A) is correct because both the assertion and reason are true, but the reason (greater amphibian diversity) doesn't directly explain why the Western Ghats are a biodiversity hotspot.
75
Hard
75 of 81
Understanding
+4 | -1
In the tropics, which of the following contributes the least to species diversity?
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Correct option: D
Spatial homogeneity
Option D (Spatial homogeneity) is correct because in the tropics, high predictability, predation, and high productivity contribute to species diversity, while spatial homogeneity tends to reduce it.
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76
Hard
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Understanding
+4 | -1
S-I: Coral reef is a biodiversity rich ecosystem.
S-II: Coral reefs are formed in tropical waters of the oceans.
S-II: Coral reefs are formed in tropical waters of the oceans.
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Correct option: A
Both S-I & S-II are correct
Option A (Both S-I & S-II are correct) is correct because coral reefs are indeed biodiversity-rich ecosystems found in tropical waters.
77
Medium
77 of 81
Analyzing
+4 | -1
Find the odd one out w.r.t. narrowly utilitarian ecosystem services
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Correct option: C
Pollination
Option C (Pollination) is correct because pollination is a broadly utilitarian ecosystem service, while the others are narrowly utilitarian.
78
Medium
78 of 81
Understanding
+4 | -1
Eminent conservationists identified that maximum protection is required to “Biodiversity Hot spots”.
Which of the following statement(s) is \ are more appropriate for this view?
A) These are the regions with very high level of species richness
B) These are the areas where alien apecies were introduced
C) These are the regions with high degree of endemism
D) These regions have a history of religious and cultural traditions
Which of the following statement(s) is \ are more appropriate for this view?
A) These are the regions with very high level of species richness
B) These are the areas where alien apecies were introduced
C) These are the regions with high degree of endemism
D) These regions have a history of religious and cultural traditions
View answer and explanation
Correct option: C
A and C
Option C (A and C) is correct because biodiversity hotspots are characterized by high species richness and a high degree of endemism, making them crucial areas for conservation efforts.
79
Easy
79 of 81
Understanding
+4 | -1
From high latitude to low latitude, biodiversity
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Correct option: B
Increases
Option B (Increases) is correct because biodiversity generally increases as you move from high latitudes (poles) towards the equator (low latitudes).
80
Hard
80 of 81
Remembering
+4 | -1
Which rock species of Western Ghat is extinct due to quarrying?
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Correct option: B
Bamboo and Boswelia
Option A (Tectona and Terminalia) is correct because certain species of Tectona (Teak) and Terminalia are threatened due to quarrying in the Western Ghats.
81
Medium
81 of 81
Understanding
+4 | -1
Rivet popper hypothesis assumes the …A… to be an aeroplane and the …B… to be the rivets, joining all parts together. Here A and B refers to
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Correct option: B
A-ecosystem; B-species
Option B (A-ecosystem; B-species) is correct because the rivet popper hypothesis uses the analogy of an airplane (ecosystem) and rivets (species) to explain the importance of each species in maintaining ecosystem stability.
Revision notes and key takeaways
Review BIODIVERSITY AND CONSERVATION in your textbook or class notes, then use this set to check your understanding.
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