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TLS Online TPP Program
#Question id: 13190
#Unit 10. Ecological Principles
During the evolution of life on Earth, the photosynthetic organisms initially responsible for raising atmospheric oxygen concentrations from less than 1 percent to about 20 percent were
TLS Online TPP Program
#Question id: 13191
#Unit 10. Ecological Principles
Which of the following statements about circadian rhythms is correct?
TLS Online TPP Program
#Question id: 13192
#Unit 10. Ecological Principles
In the schematic below, the left panel represents climatic zones occupied by two different biomes, X and Y, along gradients of temperature and precipitation. The right panel depicts the expected species-area relationships of these two biomes. From the figures below, which of the following are most likely to be true?
TLS Online TPP Program
#Question id: 26889
#Unit 10. Ecological Principles
Shifting cultivation is a form of agricultural practice in the hills of Northeast India, where a forest patch is cleared and cultivated for a few years, after which it is left fallow and allowed to regenerate. Succession occurs on such previously cultivated plots. Over time, the plant community should move towards which region in the graph?
TLS Online TPP Program
#Question id: 26890
#Unit 10. Ecological Principles
The MacArthur-Wilson equilibrium model of island biogeography predicts the number of species found on islands. The figure below depicts two volcanic islands located off a section of mainland coast.
The MacArthur-Wilson model predicts that the relative numbers of bird species on the mainland and two islands would be
TLS Online TPP Program
#Question id: 26891
#Unit 10. Ecological Principles
A researcher working on island biogeography mapped how isolation-controlled immigration (I), and area-controlled extinction (E), will act on number of species present on the islands. He forgot to label the size of the islands (small or large) and the location of the islands (near or far) on the graph.
Using information from MacArthur and Wilson's equilibrium theory, select the option that correctly identifies A, B, C and D in the figure above.