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Quizzes

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Exam:
1214 quizzes
In the species-area relationship S = C A^Z for a region, a doubling of the area raises the species by the factor 2^Z. If Z = 0.1, by what factor do the species rise? New
High School (11–12) · Biodiversity and Conservation
APA-LevelIB+14APA-LevelIB
StemPy LabStemPy Lab
Medium
On a graph with both axes on a logarithmic scale, the species-area relationship appears as New
High School (11–12) · Biodiversity and Conservation
APA-LevelIB+14APA-LevelIB
StemPy LabStemPy Lab
Medium
What are the usual ranges of the slope Z of the species-area line? New
High School (11–12) · Biodiversity and Conservation
APA-LevelIB+14APA-LevelIB
StemPy LabStemPy Lab
Medium
The plots of a long field experiment with more species showed less variation in the total biomass from year to year. Whose work does this describe? New
High School (11–12) · Biodiversity and Conservation
APA-LevelIB+14APA-LevelIB
StemPy LabStemPy Lab
Medium
The estimates of the total number of species on the Earth are far above the number described. Which is a reason for the difficulty of the count? New
High School (11–12) · Biodiversity and Conservation
APA-LevelIB+14APA-LevelIB
StemPy LabStemPy Lab
Medium
A survey team models the birds of an island group with S = C A^Z, where A is in square kilometres, C = 8 and Z = 0.13. What does the model give for one island of 500 km²? New
High School (11–12) · Biodiversity and Conservation
APA-LevelIB+16APA-LevelIB
StemPy LabStemPy Lab
Hard
The introduction of the Nile perch into Lake Victoria was followed by the extinction of many species of New
High School (11–12) · Biodiversity and Conservation
APA-LevelIB+14APA-LevelIB
StemPy LabStemPy Lab
Medium
The Amazon rain forest is being cleared for New
High School (11–12) · Biodiversity and Conservation
APA-LevelIB+14APA-LevelIB
StemPy LabStemPy Lab
Medium
A square reserve with a side of 20 km is divided by roads into four equal squares. In each square, the outer 1 km has lost its forest conditions. What per cent of the reserve is still core? New
High School (11–12) · Biodiversity and Conservation
APA-LevelIB+14APA-LevelIB
StemPy LabStemPy Lab
Medium
A study gives the value of the services of nature as 45 trillion US dollars a year, and the global product as 30 trillion US dollars a year. How many times is the value of the services the global product? New
High School (11–12) · Biodiversity and Conservation
APA-LevelIB+14APA-LevelIB
StemPy LabStemPy Lab
Medium
A species of fish goes extinct, and the parasites that live only on it also disappear. This is an example of New
High School (11–12) · Biodiversity and Conservation
APA-LevelIB+14APA-LevelIB
StemPy LabStemPy Lab
Medium
A model class has 1500 species of mammals. Suppose that the share of the mammals that is threatened is 23 per cent, as in the figures of NCERT. How many of the species are threatened? New
High School (11–12) · Biodiversity and Conservation
APA-LevelIB+16APA-LevelIB
StemPy LabStemPy Lab
Hard
All the biodiversity hotspots of the world together cover about what share of the land of the Earth? New
High School (11–12) · Biodiversity and Conservation
APA-LevelIB+14APA-LevelIB
StemPy LabStemPy Lab
Medium
Sacred groves are found in the Khasi and Jaintia Hills. In which state are these hills? New
High School (11–12) · Biodiversity and Conservation
APA-LevelIB+14APA-LevelIB
StemPy LabStemPy Lab
Medium
The Red Data Book is a record of the species that face the threat of extinction. Which organisation keeps it? New
High School (11–12) · Biodiversity and Conservation
APA-LevelIB+14APA-LevelIB
StemPy LabStemPy Lab
Medium
In a biosphere reserve, which zone has no human activity? New
High School (11–12) · Biodiversity and Conservation
APA-LevelIB+14APA-LevelIB
StemPy LabStemPy Lab
Medium
At which place and in which year was the Earth Summit held, which called on nations to conserve biodiversity? New
High School (11–12) · Biodiversity and Conservation
APA-LevelIB+14APA-LevelIB
StemPy LabStemPy Lab
Medium
A state has 3 biosphere reserves, 6 national parks and 31 wildlife sanctuaries. What per cent of its protected areas of these three kinds are sanctuaries? New
High School (11–12) · Biodiversity and Conservation
APA-LevelIB+16APA-LevelIB
StemPy LabStemPy Lab
Hard
A species of plant no longer lives in the wild, but a few plants live in a botanical garden. Which IUCN category fits it best? New
High School (11–12) · Biodiversity and Conservation
APA-LevelIB+16APA-LevelIB
StemPy LabStemPy Lab
Hard
A crop field and an aquarium are both examples of which kind of ecosystem? New
High School (11–12) · Ecosystems and Food Chains
APA-LevelIB+14APA-LevelIB
StemPy LabStemPy Lab
Medium
In which kind of ecosystem is the grazing food chain the major route of the flow of energy? New
High School (11–12) · Ecosystems and Food Chains
APA-LevelIB+14APA-LevelIB
StemPy LabStemPy Lab
Medium
In the chain grass, goat, man, at which trophic level is man? New
High School (11–12) · Ecosystems and Food Chains
APA-LevelIB+14APA-LevelIB
StemPy LabStemPy Lab
Medium
The standing crop of a trophic level is New
High School (11–12) · Ecosystems and Food Chains
APA-LevelIB+14APA-LevelIB
StemPy LabStemPy Lab
Medium
A plot of 2 m² yields 1.7 kg of fresh plants, and 60% of the fresh mass is water. What is the dry biomass for each square metre? New
High School (11–12) · Ecosystems and Food Chains
APA-LevelIB+16APA-LevelIB
StemPy LabStemPy Lab
Hard
A student says that the earthworm and the fungus are both decomposers. Which statement corrects her best? New
High School (11–12) · Ecosystems and Food Chains
APA-LevelIB+16APA-LevelIB
StemPy LabStemPy Lab
Hard
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