OnlineCBT
Biology · BIODIVERSITY AND CONSERVATION
Practice questions & answers
Find a question, read its answer and explanation, then practise related questions.
Biology BIODIVERSITY AND CONSERVATION · Clear filters
65 questions
Biology · BIODIVERSITY AND CONSERVATION
For frugivorous birds and mammals in the tropical forests of different continents, the slope of the species-area regression line (\( Z \)) is found to be:
Read answer →Biology · BIODIVERSITY AND CONSERVATION
Given below are two statements: Statement I: India possesses more than 50,000 genetically different strains of rice and 1,000 varieties of mango. Statement II: Genetic diversity refers exclusively to the total number of distinct communities and ecosystems found across an entire continent. In the light of the above statements, choose the most appropriate answer from the options given below:
Read answer →Biology · BIODIVERSITY AND CONSERVATION
Given below are two statements: Statement I: The IUCN Red List (2004) documents the extinction of 784 species in the last 500 years, which includes 359 vertebrates and 338 invertebrates. Statement II: The last twenty years alone have witnessed the disappearance of 270 recorded species from the wild. In the light of the above statements, choose the most appropriate answer from the options given below:
Read answer →Biology · BIODIVERSITY AND CONSERVATION
Exploring molecular, genetic, and species-level diversity for products of economic importance is formally defined as:
Read answer →Biology · BIODIVERSITY AND CONSERVATION
When large contiguous habitats are broken into small fragments due to various human activities, which categories of fauna are the most severely impacted?
Read answer →Biology · BIODIVERSITY AND CONSERVATION
Comparing avian diversity across different latitudes, the number of bird species decreases in which of the following sequences as we move away from the equator?
Read answer →Biology · BIODIVERSITY AND CONSERVATION
Consider the following statements regarding the stability of a biological community and ecosystem functioning: (A) A stable community should not show too much variation in productivity from year to year. (B) A stable community must be either resistant or resilient to occasional disturbances. (C) A stable community must show high susceptibility to invasions by alien species to promote diversity. (D) David Tilman demonstrated that plots with more species showed less year-to-year variation in total biomass. How many of the above statements are correct?
Read answer →Biology · BIODIVERSITY AND CONSERVATION
Given below are two statements: Statement I: The historic Convention on Biological Diversity ('The Earth Summit') was held in Rio de Janeiro in 1992. Statement II: The World Summit on Sustainable Development held in Johannesburg in 2002 saw 190 countries pledge to achieve by 2010 a significant reduction in the current rate of biodiversity loss. In the light of the above statements, choose the most appropriate answer from the options given below:
Read answer →Biology · BIODIVERSITY AND CONSERVATION
Among vertebrates, which taxonomic group comprises the largest number of species, exceeding the combined total of all other vertebrate groups?
Read answer →Biology · BIODIVERSITY AND CONSERVATION
Biodiversity hotspots are globally designated regions prioritized for conservation. Consider the following quantitative and qualitative features: (i) They exhibit very high species richness (ii) They show high degree of endemism (iii) They cover less than \( 2\% \) of the Earth's land surface (iv) Strict protection of these hotspots could reduce ongoing mass extinctions by almost: Fill in the blank with the correct value:
Read answer →Biology · BIODIVERSITY AND CONSERVATION
In the species-area relationship equation \( \log S = \log C + Z \log A \), what does the regression coefficient \( Z \) represent, and what is its typical range for small contiguous areas regardless of taxon?
Read answer →Biology · BIODIVERSITY AND CONSERVATION
According to the IUCN Red List (2004), how many total species have become extinct in the last 500 years, and how many vertebrates are included in that total?
Read answer →Biology · BIODIVERSITY AND CONSERVATION
In David Tilman's long-term ecosystem experiments using outdoor plots, which of the following observations was confirmed regarding community stability?
Read answer →Biology · BIODIVERSITY AND CONSERVATION
Consider the following statements regarding global and regional biodiversity patterns: (A) More than 70 percent of all recorded species are animals. (B) Plants (including algae, fungi, bryophytes, gymnosperms, and angiosperms) comprise more than 50 percent of the total recorded species. (C) India is one of the 12 mega diversity countries of the world. (D) Out of every 10 animals on this planet, approximately 7 are insects. Which of the above statements are correct?
Read answer →Biology · BIODIVERSITY AND CONSERVATION
India accounts for approximately 2.4% of the world's land area, but its share of the global species diversity is approximately:
Read answer →Biology · BIODIVERSITY AND CONSERVATION
Match List-I with List-II: List-I (Taxonomic Group / Region) List-II (Species Count in Amazonian Rain Forest) A Plants I 3,000 B Fishes II 1,300 C Birds III 427 D Mammals / Amphibians IV More than 40,000 Choose the correct answer from the options given below:
Read answer →Biology · BIODIVERSITY AND CONSERVATION
The intentional or unintentional introduction of alien species poses severe threats to native biodiversity. In this context, which species posed a direct threat to indigenous catfishes in Indian rivers?
Read answer →Biology · BIODIVERSITY AND CONSERVATION
Consider the following statements regarding recent extinctions: (A) The IUCN Red List (2004) documents the extinction of 784 species in the last 500 years. (B) In the last 20 years alone, 27 species have disappeared. (C) Three subspecies of tiger—Bali, Javan, and Caspian—are among the recent extinctions. (D) The dodo was an extinct flightless bird from Australia. How many of the above statements are correct?
Read answer →Biology · BIODIVERSITY AND CONSERVATION
In India, ecologically unique and biodiversity-rich regions are legally protected through a network of protected areas. According to official conservation records, India has:
Read answer →Biology · BIODIVERSITY AND CONSERVATION
According to Robert May's global estimates, the total number of species present on Earth is approximately 7 million. If recorded species represent about 22% of this estimate, the number of species yet to be discovered globally is roughly:
Read answer →Biology · BIODIVERSITY AND CONSERVATION
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): Tropical regions harbor greater species diversity compared to temperate regions. Reason (R): Tropical environments are subjected to frequent glaciations that stimulate rapid speciation. In the light of the above statements, choose the correct answer from the options given below:
Read answer →Biology · BIODIVERSITY AND CONSERVATION
Match List-I with List-II: List-I (Sacred Grove / Region) List-II (State / Geographic Location) A Khasi and Jaintia Hills I Rajasthan B Aravalli Hills II Karnataka and Maharashtra C Western Ghat regions III Madhya Pradesh D Sarguja, Chanda and Bastar IV Meghalaya Choose the correct answer from the options given below:
Read answer →Biology · BIODIVERSITY AND CONSERVATION
