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TLS Online TPP Program

#Question id: 4623

 Which of the events described below agrees with the idea of catastrophism?

#Section 2: Evolution

  1. The gradual uplift of the Himalayas by the collision of the Australian crustal plate with the Eurasian crustal plate

  2. The formation of the Grand Canyon by the Colorado River over millions of years

  3. The gradual deposition of sediments many kilometers thick on the floors of seas and oceans

  4. The sudden demise of the dinosaurs, and various other groups, by the impact of a large extraterrestrial body with Earth

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TLS Online TPP Program

#Question id: 10719

#Section 1: Ecology

Five Hypotheses Explain How Species Richness Affects Community Services, Following statement are given
A) Community services decline with decreased species richness in a stepwise fashion.
B) Species that play the same roles in a community can compensate for each other if some are lost under particular conditions
C) Species richness declines even slightly from its natural levels, community services are reduced immediately
D) Community services change as the number of species increases or decreases, but that the direction of change is not predictable.
TLS Online TPP Program

#Question id: 10720

#Section 1: Ecology

What is the Jaccard index between the two communities?

 Species Community A Community B 
158
236
304
4112
520
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?