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TLS Online TPP Program

#Question id: 10169

Which of the following is not the effect of C3 and C4 cycle in hot and dry climates ?

#Section 5: Applied Ecology & Evolution
  1. elevated temperatures limit the rate of photosynthetic CO2 assimilation in C3 plants by decreasing the solubility of CO2
  2. In C4 plants warm climates decrease the levels of CO2, but the low concentrations of cytosolic HCO3 − saturate PEP Case because the affinity of the enzyme for its substrate is sufficiently high
  3. The optimal photosynthetic efficiency of C3 species generally occurs at temperatures lower than for C4 species
  4. C4 species become less abundant in the tropics and subtropics and more abundant when latitudes depart from the equator
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TLS Online TPP Program

#Question id: 10721

#Section 1: Ecology

Which above spp having decrease order of abundance?
TLS Online TPP Program

#Question id: 10722

#Section 1: Ecology

Community 1 contains 100 individuals distributed among four species (A, B, C, and D). Community 2 contains 100 individuals distributed among three species (A, B, and C). Community 1: 5A, 5B, 85C, 5D Community 2: 30A, 40B, 30C Calculate the Shannon diversity (H) for each community.
TLS Online TPP Program

#Question id: 10723

#Section 1: Ecology

What does the graph tell you about the effect of a keystone species?
TLS Online TPP Program

#Question id: 10725

#Section 1: Ecology

While studying the diversity of 3 communities, 5 species and 50 individuals were recorded from each community. The number of individuals under each species was listed as mentioned in the following Table.  


Which of the following is decreasing order of evenness of community?
TLS Online TPP Program

#Question id: 12348

#Section 1: Ecology

The following equation represents a hypothetical relationship between fitness (w) and shoot: root ratio (r) in individuals of a plant species: w = 10r-10r2. At what value of shoot: root ratio (r), do these plants achieve maximum fitness? (Use decimal notation, not fractions or percentage)
TLS Online TPP Program

#Question id: 12347

#Section 1: Ecology

A team of conservation biologists, surveying a population of frogs on an island, captured and marked 312 individuals in the first sample. In a second sampling, 3 days later, the team caught 140 individuals of which 26 were previously marked. The total number of frogs on the island is estimated to be . (Use decimal notation, not fractions or percentage)