Biodiversity and Conservation
Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.
Levels and Patterns of Biodiversity
SubtopicLevels and Patterns of Biodiversity under Biodiversity and Conservation for Grade 12 CBSE.
Preview questions (no answers)
- 1.
Alexander von Humboldt's studies were primarily conducted in the jungles of:
A.Africa
B.South America
C.South East Asia
D.Australia
- 2.
Which of the following is NOT a reason for high tropical biodiversity?
A.More solar energy
B.Longer evolutionary time
C.Constant environment
D.Frequent volcanic eruptions
- 3.
What happens to the slope of the species-area relationship as the area analyzed becomes much larger (e.g., a whole continent)?
A.It becomes flatter
B.It becomes steeper
C.It remains the same
D.It becomes zero
- 4.
Which level of biodiversity ensures that a species can adapt to changing environmental conditions?
A.Ecological diversity
B.Genetic diversity
C.Species diversity
D.Ecosystem diversity
- 5.
Which of the following groups of animals has the highest species richness in the Amazon rain forest?
A.Mammals
B.Amphibians
C.Reptiles
D.Invertebrates
- 6.
In the context of the species-area relationship, if we analyze the value for birds in a small city park versus the value for birds across the whole of Asia, we would expect:
A.The value for the park to be much higher.
B.The value for the continent to be much steeper.
C.Both values to be exactly 0.1.
D.The value for the continent to be 0.15.
- 7.
A comparison between the biodiversity of the Alps and the Himalayas would primarily focus on which level of biodiversity if comparing the entire mountain range systems?
A.Genetic diversity
B.Ecological diversity
C.Species richness of a single lake
D.Cellular diversity
- 8.
India has more than 50,000 genetically different strains of rice. This is an example of:
A.Species diversity
B.Genetic diversity
C.Ecological diversity
D.Landscape diversity
- 9.
Which of the following represents a group where the number of species in the world is more than the combined total of the species of fishes, amphibians, reptiles, and mammals?
A.Algae
B.Fungi
C.Mosses
D.Ferns
- 10.
What is the specific value range for the regression line when scientists analyze species-area relationships across very large areas like entire continents?
A.0.01 to 0.1
B.0.1 to 0.2
C.0.6 to 1.2
D.1.5 to 2.0
Download the worksheet for Biodiversity and Conservation - Levels and Patterns of Biodiversity to practice offline. It includes additional chapter-level practice questions.
Importance and Loss of Biodiversity
SubtopicImportance and Loss of Biodiversity under Biodiversity and Conservation for Grade 12 CBSE.
Preview questions (no answers)
- 1.
The Amazon rain forest is being cleared primarily for which of the following?
A.Soya bean cultivation
B.Industrial development
C.Building new cities
D.Mining minerals
- 2.
The recent extinction of Steller's sea cow occurred in which country?
A.Mauritius
B.Australia
C.Russia
D.Africa
- 3.
Approximately what percentage of all recorded species are plants (including algae, fungi, bryophytes, gymnosperms, and angiosperms)?
A.70 percent
B.22 percent
C.50 percent
D.10 percent
- 4.
Which of the following is NOT an example of an alien species that has caused environmental damage in India?
A.Parthenium (carrot grass)
B.Lantana
C.Eichhornia (water hyacinth)
D.Neem (Azadirachta indica)
- 5.
Applying Robert May's global estimate of million species to the Indian context, the proportion of species yet to be discovered is significant. Based on these estimates, what is the number of plant and animal species respectively that are still waiting to be discovered and described in India?
A.and
B.and
C.and
D.and
- 6.
According to the patterns of global biodiversity described in the NCERT, the species richness of which group of organisms is estimated to be greater than the combined total of all species of fishes, amphibians, reptiles, and mammals?
A.Fungi
B.Angiosperms
C.Algae
D.Mosses and Ferns
- 7.
If we accept Robert May’s global estimates, what percentage of the total species have actually been recorded so far?
A.8.1 percent
B.22 percent
C.50 percent
D.70 percent
- 8.
India is designated as one of the 12 mega-diversity countries of the world. Based on the statistical data provided in the NCERT curriculum regarding biodiversity patterns and estimations, which of the following sets of values correctly identifies the missing statistics (, , , and ) in the data flow shown below?
A.B.C.D. - 9.
In the context of the IUCN Red List (2004), 359 species of which group have become extinct in the last 500 years?
A.Vertebrates
B.Invertebrates
C.Plants
D.Fungi
- 10.
Which of the following set of values accurately represents the percentage of total estimated cost of ecosystem services for 'climate regulation' and 'habitat for wildlife' respectively?
A.and
B.and
C.and
D.and
Download the worksheet for Biodiversity and Conservation - Importance and Loss of Biodiversity to practice offline. It includes additional chapter-level practice questions.
Biodiversity Conservation (In-situ and Ex-situ)
SubtopicBiodiversity Conservation (In-situ and Ex-situ) under Biodiversity and Conservation for Grade 12 CBSE.
Preview questions (no answers)
- 1.
The primary goal of the Biodiversity Bill 2002 was to protect India’s biodiversity and ensure:
A.Increased timber export
B.Equitable sharing of benefits from traditional knowledge
C.Complete ban on all research
D.Conversion of forests to agricultural land
- 2.
Ex-situ conservation is often the only option when:
A.A population is very large and healthy
B.A species is threatened or near extinction in its natural home
C.We want to increase the forest area
D.The habitat is perfectly safe
- 3.
Which of these regions is recognized as a 'Sacred Lake' in India?
A.Dal Lake
B.Chilika Lake
C.Khecheopalri Lake in Sikkim
D.Wular Lake
- 4.
The Western Ghats are a biodiversity hotspot because they have a high number of species that are:
A.Widely distributed
B.Endemic to that region
C.Invasive and non-native
D.Artificially introduced
- 5.
The most important strategy for the conservation of biodiversity is the establishment of:
A.Botanical gardens
B.Biosphere reserves
C.Zoological parks
D.Seed banks
- 6.
Which of the following is a key feature of the 'Buffer Zone' in a Biosphere Reserve?
A.It is the outermost part of the reserve.
B.No human activity is allowed.
C.Limited human activity for research and education is permitted.
D.It is mainly used for residential purposes.
- 7.
Which method would be most appropriate to conserve an animal species that is almost extinct in the wild and whose natural habitat is heavily polluted?
A.National Park
B.Wildlife Sanctuary
C.Zoological Park
D.Sacred Grove
- 8.
The total number of National Parks and Wildlife Sanctuaries in India is approximately:
A.10 and 100 respectively
B.50 and 200 respectively
C.101 and 567 respectively
D.500 and 1000 respectively
- 9.
Which of the following is NOT an objective of the Convention on Biological Diversity (CBD)?
A.Conservation of biological diversity.
B.Sustainable use of the components of biological diversity.
C.Fair and equitable sharing of benefits arising out of the utilization of genetic resources.
D.Mandatory relocation of all endangered species to ex-situ facilities.
- 10.
In India, the 'Aravalli Hills' serve as a sacred grove for conservation in which state?
A.Madhya Pradesh
B.Rajasthan
C.Maharashtra
D.Karnataka
Download the worksheet for Biodiversity and Conservation - Biodiversity Conservation (In-situ and Ex-situ) to practice offline. It includes additional chapter-level practice questions.